350 tbi surging

x2 Checking the fuel pressure with a suitable gauge will provide the answer. Could be the pressure regulator, fuel pump, or a restriction such as a plugged in-line fuel filter, plugged tank filter sock, severely kinked hose or sticking tank selector valve. Measure the fuel pressure before throwing more parts at it.3 answers. 87 chevy 350 tbi will only start if if pour gas in the throddle body then keep it running by pumping the peddle. It seems to starve at higher rpms, and when it does idle the rpm's swing from hig. Sounds like the fuel pump is going bad (or in this case,has gone bad). Along with the erratic idle, the engine has absolutely zero power. It stumbles as if it's missing a couple of cylinders when you accelerate. It has a hard time with ANY load (even the A/C compressor). I checked all of the wires and they are all good and tight on the plugs. Also made sure that they are going to the right cylinders.It basically almost dies out, and then surges back to life (probably a little higher than normal idle), then repeats continuously until you apply some throttle. If I had to guess, I'd say it's a dirty throttle body, or possibly injecters. If it is one of these, what would be the best way to clean them?. Re: 90 chevy k1500 350 tbi fuel problem starts but wont... Ok, the one thing you didn't change is the pick-up coil in the distributor The ECM relies on a trigger signal from the ditributor, thats made by the pick-up, to close the pump relay and keep the pump running. The oil pressure sender can also operate the pump after it "sees" enough oil ... Running with stock programming with a low idle speed setting combined with the fact the chip is designed for 20-21″ of vacuum at that idle rpm with a cam upgrade which typically drops the vacuum to 18″ or less will cause the motor to run too rich which will spawn a high idle speed where the motor will then lean out and rpm drops and repeat.It basically almost dies out, and then surges back to life (probably a little higher than normal idle), then repeats continuously until you apply some throttle. If I had to guess, I'd say it's a dirty throttle body, or possibly injecters. If it is one of these, what would be the best way to clean them?. What causes a 1988 c2500 2wd 350 TBI to flood on tip - in and run fine on all other throttle postions? I have spent $ - computer, 02 sensor, NEW dist. - plugs wires - etc. checked TBI gaskets but not rebuilt the TBI. ... unplug the vacuum hose to it and if the surging goes away replace the EGR valve. Top. Schurkey HotPass Posts: 1682 Joined ...It basically almost dies out, and then surges back to life (probably a little higher than normal idle), then repeats continuously until you apply some throttle. If I had to guess, I'd say it's a dirty throttle body, or possibly injecters. 1988 Chevy 350 tbi idle adjustment? simply put you can't if it is idleing not normal their is a problem surging/hunting idle=fuel pump/filter high idle =vacuum leak or sometimes fuel pumpWhat causes a 1988 c2500 2wd 350 TBI to flood on tip - in and run fine on all other throttle postions? I have spent $ - computer, 02 sensor, NEW dist. - plugs wires - etc. checked TBI gaskets but not rebuilt the TBI. ... unplug the vacuum hose to it and if the surging goes away replace the EGR valve. Top. Schurkey HotPass Posts: 1682 Joined ...1987 tbi 350 manual trans surging idel and at 3200 rpm the truck runs great.I have replaced every sensor, wires, distibutor,intake with a after … read more Mike S. Chevy Mechanic Vocational, Technical or Tra... 2,390 satisfied customers Show more Disclaimer: Information in questions answers, and Show LessThese are the test steps: 1. Disconnect the vacuum hose that connects to the EGR valve vacuum port. Leave the other end that connects to the EGR vacuum solenoid connected to it. 2. Connect a vacuum gauge to the vacuum hose you just disconnected from the EGR valve. NOTE: If you don't have a vacuum gauge, don't panic.What causes a 1988 c2500 2wd 350 TBI to flood on tip - in and run fine on all other throttle postions? I have spent $ - computer, 02 sensor, NEW dist. - plugs wires - etc. checked TBI gaskets but not rebuilt the TBI. ... unplug the vacuum hose to it and if the surging goes away replace the EGR valve. Top. Schurkey HotPass Posts: 1682 Joined ...Well here is a basic guideline. Stock 210hp 350 V8 up to 250hp the stock 55lb 350 truck injectors at the factory 11-12psi is fine. from 250hp to 260hp the fuel pressure should be bumped up to 13-14psi on stock 350 truck injectors which will change their flow rating to 60lb/hr. It basically almost dies out, and then surges back to life (probably a little higher than normal idle), then repeats continuously until you apply some throttle. If I had to guess, I'd say it's a dirty throttle body, or possibly injecters. If it is one of these, what would be the best way to clean them?. 1987 tbi 350 manual trans surging idel and at 3200 rpm the truck runs great.I have replaced every sensor, wires, distibutor,intake with a after … read more Mike S. Chevy Mechanic Vocational, Technical or Tra... 2,390 satisfied customers Show more Disclaimer: Information in questions answers, and Show LessJust finished a 350 TBI / 700R4 / 3.8 Atlas II transplant last Sunday. Dragged the CJ-7 up to Northern California and ran the Rubicon last week. All went well except I experienced the engine surging at idle. This was quite bothersome descending hills in low range/first.. "/> Alrighty, so I have a 1995 k2500 Silverado with 350 tbi . this thing is surging and its always a 50/50 chance of it stalling out when ever I come to a stop or get into reverse, it has just under 238k on the engine and its only does this at idle when i have my foot on the gas pedal it doesn't surge at all but once it idles or its just sitting still it surges. The hose should go from the valve cover to the TBI (to the spacer between TBI body and aircleaner). If it's messed up with oil at this location, you should check if your PCV is clogged. @John: The green line is the vent line that goes to the tank. You have three lines attached to the tank: fuel line, fuel return line and ventilation.Sep 14, 2008. #1. Recently rebuilt the 454 in my 1990 TBI Burb. I am having a terrible time with getting it to idle smooth. The engine has a little over 500 miles on it. I have spent countless hours going over the engine looking for vacuum leaks and believe every thing is OK on that front. I have replaced the engine temp sensor, the connections ...Custom Chip from TBIChips Problem: Idle Surge , sometimes from 400RPM to 1200 and sometimes from 800 to 900. Eventually flattens out and stops but returns if I blip the throttle. Rich condition at idle . Black smoke after the surge sequence. Worse when engine warm. . Sep 2, 2004. #5. Re: What should timing advance be on a 5.7L 350 merc (chev/GM) You have vortec heads on your new engine. They need 4 degrees less advance than the old style heads. 28 degrees is max recommended advance on vortecs, and 32 degrees on older heads. 1990 Chevrolet C1500 -- 350 V8 TBI-- Regular Cab, Short Bed, 2 wheel drive, 89200 ...The truck registers one code (44) witch means it is running lean, and that doesn't make sense to me. What I believe is causing the problem is the map sensor, tps sensor, or the iac valve. I'm not positive that these are the culprits, so any advice would help. LATECH Administrator Joined Jul 19, 2010 8,540 Posts #2 · Jan 29, 2011Mar 31, 2003 · It ran great for a few minutes, then started making some scary noises, sounded like valvetrain problems. Set the timing back to where it was before, disconnecting the tan ALDL on the firewall so the comp wouldnt set it back. It ran well, then a few minutes later started surging real bad, acted like it was running out of gas, jumping around a lot. Alrighty, so I have a 1995 k2500 Silverado with 350 tbi . this thing is surging and its always a 50/50 chance of it stalling out when ever I come to a stop or get into reverse, it has just under 238k on the engine and its only does this at idle when i have my foot on the gas pedal it doesn't surge at all but once it idles or its just sitting still it surges. About Stalling Tbi 350. Длинна электрода, мм. combined with new fuel injectors, the tbs 10201 injector spacer and an ac delco 219-607 full gasket kit for the tbi, full tune up, dual exhaust and wow! quick start no matter the weather, very much improved throttle response, 15 mpg (up from 12).. It basically almost dies out, and then surges back to life (probably a little higher than normal idle), then repeats continuously until you apply some throttle. If I had to guess, I'd say it's a dirty throttle body, or possibly injecters. If it is one of these, what would be the best way to clean them?. from 250hp to 260hp the fuel pressure should be bumped up to 13-14psi on stock 350 truck injectors which will change their flow rating to 60lb/hr From 270hp to 340hp you need to change the fuel pump as the stock pump can't maintain pressure over 270hp and you need to run 18psi on the 350 truck injectors for a flow rate of 72lb/hrThese are the test steps: 1. Disconnect the vacuum hose that connects to the EGR valve vacuum port. Leave the other end that connects to the EGR vacuum solenoid connected to it. 2. Connect a vacuum gauge to the vacuum hose you just disconnected from the EGR valve. NOTE: If you don't have a vacuum gauge, don't panic.Apr 17, 2019 · 1993 K1500 Sierra 350 TBI with 174k miles. Engine has been rebuilt with around 35k on the rebuild. It has an RV cam and high volume oil pump. Other than that it is stock. I just received the truck from my dad and im trying to diagnose some issues it has had for some time. It basically almost dies out, and then surges back to life (probably a little higher than normal idle), then repeats continuously until you apply some throttle. If I had to guess, I'd say it's a dirty throttle body, or possibly injecters. If it is one of these, what would be the best way to clean them?. Re: 90 chevy k1500 350 tbi fuel problem starts but wont... Ok, the one thing you didn't change is the pick-up coil in the distributor The ECM relies on a trigger signal from the ditributor, thats made by the pick-up, to close the pump relay and keep the pump running. The oil pressure sender can also operate the pump after it "sees" enough oil ... Mar 31, 2003 · It ran great for a few minutes, then started making some scary noises, sounded like valvetrain problems. Set the timing back to where it was before, disconnecting the tan ALDL on the firewall so the comp wouldnt set it back. It ran well, then a few minutes later started surging real bad, acted like it was running out of gas, jumping around a lot. Solution: The Chevy 350 TBI doesn't have a fuel pressure test port.So, you need to test it with fittings to tee in the pressure gauge.Now, if the fuel pressure specification is in the range of 9 to 13 PSI, both your fuel pump and regulator are working fine. If not and if the pressure is low, the reason behind this could be either the fuel pump or the regulator.Apr 17, 2019 · 1993 K1500 Sierra 350 TBI with 174k miles. Engine has been rebuilt with around 35k on the rebuild. It has an RV cam and high volume oil pump. Other than that it is stock. I just received the truck from my dad and im trying to diagnose some issues it has had for some time. Apr 17, 2019 · 1993 K1500 Sierra 350 TBI with 174k miles. Engine has been rebuilt with around 35k on the rebuild. It has an RV cam and high volume oil pump. Other than that it is stock. I just received the truck from my dad and im trying to diagnose some issues it has had for some time. Along with the erratic idle, the engine has absolutely zero power. It stumbles as if it's missing a couple of cylinders when you accelerate. It has a hard time with ANY load (even the A/C compressor). I checked all of the wires and they are all good and tight on the plugs. Also made sure that they are going to the right cylinders.It basically almost dies out, and then surges back to life (probably a little higher than normal idle), then repeats continuously until you apply some throttle. If I had to guess, I'd say it's a dirty throttle body, or possibly injecters. If it is one of these, what would be the best way to clean them?.After trying several other fixes I finally diagnosed and repaired the problem part. The throttle body gasket had broken and was letting in too much air caus... 91 Chevy C1500 ext cab, TBI 350, NV4500, 2in suspension lift. (DD) It is possible that the TB is wore out and it is leaking past the throttle plates or through the throttle plate shafts but given the evidence I think the leak is a lot larger. You seem to have ruled out a leaky intake gasket. Apr 17, 2019 · 1993 K1500 Sierra 350 TBI with 174k miles. Engine has been rebuilt with around 35k on the rebuild. It has an RV cam and high volume oil pump. Other than that it is stock. I just received the truck from my dad and im trying to diagnose some issues it has had for some time. When turning the key to the "on" position the fuel pump primes for around ... Mar 31, 2003 · It ran great for a few minutes, then started making some scary noises, sounded like valvetrain problems. Set the timing back to where it was before, disconnecting the tan ALDL on the firewall so the comp wouldnt set it back. It ran well, then a few minutes later started surging real bad, acted like it was running out of gas, jumping around a lot. Custom Chip from TBIChips Problem: Idle Surge , sometimes from 400RPM to 1200 and sometimes from 800 to 900. Eventually flattens out and stops but returns if I blip the throttle. Rich condition at idle . Black smoke after the surge sequence. Worse when engine warm. . Aug 11, 2015 · Checking the fuel pressure with a suitable gauge will provide the answer. Could be the pressure regulator, fuel pump, or a restriction such as a plugged in-line fuel filter, plugged tank filter sock, severely kinked hose or sticking tank selector valve. Measure the fuel pressure before throwing more parts at it. 88 chevy 350 tbi. Surging at idle. Codes 34 and 44. Have replaced TPS,iac, cts, map sensor, egr, fuel pressure regulator, - Answered by a verified GM Mechanic ... 1990 gmc truck too much fuel rubuilt tbi replaced map sensor replaced o2 sensor no other codes cold start hard after warms up starts too flood out can un plug 1 injector and engine ...Jun 23, 2010 · ALL RWD,4 B BODIES!!! 1995 white 9c1 24 inch rims, muffler delete 4-20-09,hollowed cats, touchscreen, kicker cvx 15 2000 watt rms DD 1991 CAPRICe CLASSIC 1st B Body all original 350 tbi over 200,000 custom 20's sold it in like '06 and hate myself for it!!! for a GM TBI application to read the data, or to check for stored codes. Consult a service manual or see below for any check engine light code definitions. You can use a late 80’s or early 90’s GM TBI definition. If you have access to a scan tool use a hook up for a 1990 350 cu. in. 5.7L Chevrolet truck. Here's a list of the pins but they are also on the wiring diagrams above. A1- grn/wht- this wire is used to energize the fuel pump relay. A2- not used. A3- not used. A4- gry- to EGR relay. (optional) This is a ground from the ECM to control the EGR relay. A5- brn/wht- SES (service eng soon) light. Alrighty, so I have a 1995 k2500 Silverado with 350 tbi . this thing is surging and its always a 50/50 chance of it stalling out when ever I come to a stop or get into reverse, it has just under 238k on the engine and its only does this at idle when i have my foot on the gas pedal it doesn't surge at all but once it idles or its just sitting still it surges. Running with stock programming with a low idle speed setting combined with the fact the chip is designed for 20-21″ of vacuum at that idle rpm with a cam upgrade which typically drops the vacuum to 18″ or less will cause the motor to run too rich which will spawn a high idle speed where the motor will then lean out and rpm drops and repeat.Apr 17, 2019 · 1993 K1500 Sierra 350 TBI with 174k miles. Engine has been rebuilt with around 35k on the rebuild. It has an RV cam and high volume oil pump. Other than that it is stock. I just received the truck from my dad and im trying to diagnose some issues it has had for some time. It basically almost dies out, and then surges back to life (probably a little higher than normal idle), then repeats continuously until you apply some throttle. If I had to guess, I'd say it's a dirty throttle body, or possibly injecters. If it is one of these, what would be the best way to clean them?. Just finished a 350 TBI / 700R4 / 3.8 Atlas II transplant last Sunday. Dragged the CJ-7 up to Northern California and ran the Rubicon last week. All went well except I experienced the engine surging at idle. This was quite bothersome descending hills in low range/first.. "/> Oct 20, 2012 · Dec 9, 2011. 291. Damon said: On a cold start it's running in open loop (pre-programmed tables, no reference to the O2). Plus, when the engine is cold it's calling for a higher idle speed and richer mixture than when it's fully warmed up at curb idle. Surging at idle sounds like it's bouncing off of the "stall save" in the idle programming. Custom Chip from TBIChips Problem: Idle Surge , sometimes from 400RPM to 1200 and sometimes from 800 to 900. Eventually flattens out and stops but returns if I blip the throttle. Rich condition at idle . Black smoke after the surge sequence. Worse when engine warm. . New IAC, coolant temp , and rebuilt TBI.... Ok check your transmission fluid color (google it). I am guessing your engine is getting hot and that gauge with 300k on it is no longer reading correctly. You could also have a air bubble in the sensor area giving the pcm false readings. Pull the temperature sensor and check it electrical wise (google). .Philly area. A TPS is a low-buck part. You've done enough diagnosis to try a new one. I don't think it will help, but it might. The TPS is one of the main sensor inputs on a TBI (speed/density) type system. When you unplug it, the ECM goes into "limp home" mode with a pre-set series of tables designed to have the best shot at keeping the engine ...Well here is a basic guideline. Stock 210hp 350 V8 up to 250hp the stock 55lb 350 truck injectors at the factory 11-12psi is fine. from 250hp to 260hp the fuel pressure should be bumped up to 13-14psi on stock 350 truck injectors which will change their flow rating to 60lb/hr. It basically almost dies out, and then surges back to life (probably a little higher than normal idle), then repeats continuously until you apply some throttle. If I had to guess, I'd say it's a dirty throttle body, or possibly injecters. If it is one of these, what would be the best way to clean them?. Just finished a 350 TBI / 700R4 / 3.8 Atlas II transplant last Sunday. Dragged the CJ-7 up to Northern California and ran the Rubicon last week. All went well except I experienced the engine surging at idle. This was quite bothersome descending hills in low range/first.. "/> Just finished a 350 TBI / 700R4 / 3.8 Atlas II transplant last Sunday. Dragged the CJ-7 up to Northern California and ran the Rubicon last week. All went well except I experienced the engine surging at idle. This was quite bothersome descending hills in low range/first.. "/> Apr 17, 2019 · 1993 K1500 Sierra 350 TBI with 174k miles. Engine has been rebuilt with around 35k on the rebuild. It has an RV cam and high volume oil pump. Other than that it is stock. I just received the truck from my dad and im trying to diagnose some issues it has had for some time. Well here is a basic guideline. Stock 210hp 350 V8 up to 250hp the stock 55lb 350 truck injectors at the factory 11-12psi is fine. from 250hp to 260hp the fuel pressure should be bumped up to 13-14psi on stock 350 truck injectors which will change their flow rating to 60lb/hr. I am having a idle issue. Once the motor is warm (350 tbi) the idle wants to surge. I would say that is varies a few 100 rpm. It is idling and then it almost dies, and then goes back to idle. Talked to the guys at the local shop they thought it was the idle air control, replaced that and it made very little change.Apr 17, 2019 · 1993 K1500 Sierra 350 TBI with 174k miles. Engine has been rebuilt with around 35k on the rebuild. It has an RV cam and high volume oil pump. Other than that it is stock. I just received the truck from my dad and im trying to diagnose some issues it has had for some time. When turning the key to the "on" position the fuel pump primes for around ... It basically almost dies out, and then surges back to life (probably a little higher than normal idle), then repeats continuously until you apply some throttle. If I had to guess, I'd say it's a dirty throttle body, or possibly injecters. If it is one of these, what would be the best way to clean them?. Surging at idle/rpms up and down then dies - 1992 Chevy K1500 5.7: while driving truck it started bucking, rpms rapidly going up and down. ... ignition module, map sensor, oxygen sensor, throttle position sensor, coil, temperature sensor, cap and rotor, tbi base gasket, fuel pump, fuel filter, fuel pressure regulator, fixed two vacuum leaks. ...About Stalling Tbi 350. Длинна электрода, мм. combined with new fuel injectors, the tbs 10201 injector spacer and an ac delco 219-607 full gasket kit for the tbi, full tune up, dual exhaust and wow! quick start no matter the weather, very much improved throttle response, 15 mpg (up from 12).. amazon warehouse accident; how much is tesla stock actually worth; what transformer do i need for led lights install android carplay; sex college girls moondrop blessing 2 philippines iphone 8 plus back glass 3 answers. 87 chevy 350 tbi will only start if if pour gas in the throddle body then keep it running by pumping the peddle. It seems to starve at higher rpms, and when it does idle the rpm's swing from hig. Sounds like the fuel pump is going bad (or in this case,has gone bad).Jan 14, 2010 · Two things to check. First, replace your coolant temp sensor. Two wire sensor right beside your thermostat housing with black and yellow wires. Those sensors fail to high resistance, making the engine controller think the coolant iis -40F and really lay on the fuel heavy to choke the engine. Costs around 20 bucks for a new one. '91 TBI 350 surging at idle and stumbling at speed 21 - 40 of 64 Posts Prev 1 2 3 4 Next Binder Registered Joined Sep 10, 2000 2,988 Posts #21 · Jun 3, 2008 You could try this to test the MAP sensor. Use a vacuum pump. 0" vacuum - 5.00v 5" vacuum - 3.7v 10" vacuum - 2.8v 15" vacuum - 2.1v 20" vacuum - 1.0v S.N.O.R.T. T TexasA&M Registered347,000 MILES. Ok here is my issue I have a 1993 k1500 with a 5.7 tbi when at idle it has a low to the idle. It flacuates between 350 and 1000 rpm. I has so far replaced distributor, cap, rotor, plugs, wires, cts, iac, o2 sensor, map sensor and tps. I have checked and cleaned all of the grounds, reset the timing, check fuel pressure, checked ...Just finished a 350 TBI / 700R4 / 3.8 Atlas II transplant last Sunday. Dragged the CJ-7 up to Northern California and ran the Rubicon last week. All went well except I experienced the engine surging at idle. This was quite bothersome descending hills in low range/first.. "/> About Stalling Tbi 350. Длинна электрода, мм. combined with new fuel injectors, the tbs 10201 injector spacer and an ac delco 219-607 full gasket kit for the tbi, full tune up, dual exhaust and wow! quick start no matter the weather, very much improved throttle response, 15 mpg (up from 12).. What causes a 1988 c2500 2wd 350 TBI to flood on tip - in and run fine on all other throttle postions? I have spent $ - computer, 02 sensor, NEW dist. - plugs wires - etc. checked TBI gaskets but not rebuilt the TBI. ... unplug the vacuum hose to it and if the surging goes away replace the EGR valve. Top. Schurkey HotPass Posts: 1682 Joined ...Apr 17, 2019 · 1993 K1500 Sierra 350 TBI with 174k miles. Engine has been rebuilt with around 35k on the rebuild. It has an RV cam and high volume oil pump. Other than that it is stock. I just received the truck from my dad and im trying to diagnose some issues it has had for some time. 3 answers. 87 chevy 350 tbi will only start if if pour gas in the throddle body then keep it running by pumping the peddle. It seems to starve at higher rpms, and when it does idle the rpm's swing from hig. Sounds like the fuel pump is going bad (or in this case,has gone bad). amazon warehouse accident; how much is tesla stock actually worth; what transformer do i need for led lights install android carplay; sex college girls moondrop blessing 2 philippines iphone 8 plus back glass After trying several other fixes I finally diagnosed and repaired the problem part. The throttle body gasket had broken and was letting in too much air caus... It basically almost dies out, and then surges back to life (probably a little higher than normal idle), then repeats continuously until you apply some throttle. If I had to guess, I'd say it's a dirty throttle body, or possibly injecters. If it is one of these, what would be the best way to clean them?. from 250hp to 260hp the fuel pressure should be bumped up to 13-14psi on stock 350 truck injectors which will change their flow rating to 60lb/hr From 270hp to 340hp you need to change the fuel pump as the stock pump can't maintain pressure over 270hp and you need to run 18psi on the 350 truck injectors for a flow rate of 72lb/hrSep 2, 2004. #5. Re: What should timing advance be on a 5.7L 350 merc (chev/GM) You have vortec heads on your new engine. They need 4 degrees less advance than the old style heads. 28 degrees is max recommended advance on vortecs, and 32 degrees on older heads. 1990 Chevrolet C1500 -- 350 V8 TBI-- Regular Cab, Short Bed, 2 wheel drive, 89200 ...Just finished a 350 TBI / 700R4 / 3.8 Atlas II transplant last Sunday. Dragged the CJ-7 up to Northern California and ran the Rubicon last week. All went well except I experienced the engine surging at idle. This was quite bothersome descending hills in low range/first.. "/> Custom Chip from TBIChips Problem: Idle Surge , sometimes from 400RPM to 1200 and sometimes from 800 to 900. Eventually flattens out and stops but returns if I blip the throttle. Rich condition at idle . Black smoke after the surge sequence. Worse when engine warm. . hello,i have a 1987 chevy 1 ton work truck that has 350 tbi and i am having problems,over the year when i would crank it up and go down the road it would surge alittle but would clear up i a minute or so,well this morning i went to crank it up it cranked fine but started surging up and down and gets worse,when i try to give it gas it will die,but …I also have a Black Bear 91+ octane tune, 4.10 gears, cold air intake, and exhaust. 35-60mph its 17-20mpg. 60-80mph its 13-15mpg.New IAC, coolant temp , and rebuilt TBI.... 1988 Chevy R-30, 454 7.4 TBI with 95,000 miles, and a 4-speed manual trans. For several years now I have had a surging problem while accerlating, it skips and misfires while idling, it started off a small problem, and all I had to do to correct the problem is let the truck warm up to normal...I also have a Black Bear 91+ octane tune, 4.10 gears, cold air intake, and exhaust. 35-60mph its 17-20mpg. 60-80mph its 13-15mpg.Just finished a 350 TBI / 700R4 / 3.8 Atlas II transplant last Sunday. Dragged the CJ-7 up to Northern California and ran the Rubicon last week. All went well except I experienced the engine surging at idle. This was quite bothersome descending hills in low range/first.. "/> 88 chevy 350 tbi. Surging at idle. Codes 34 and 44. Have replaced TPS,iac, cts, map sensor, egr, fuel pressure regulator, - Answered by a verified GM Mechanic ... 1990 gmc truck too much fuel rubuilt tbi replaced map sensor replaced o2 sensor no other codes cold start hard after warms up starts too flood out can un plug 1 injector and engine ...Aug 11, 2015 · Checking the fuel pressure with a suitable gauge will provide the answer. Could be the pressure regulator, fuel pump, or a restriction such as a plugged in-line fuel filter, plugged tank filter sock, severely kinked hose or sticking tank selector valve. Measure the fuel pressure before throwing more parts at it. Mar 23, 2002 · it feels like its somewhat surging or jumping ahead like it has very slight power boosts and lulls. This is very subtle. If you gas it hard it has plenty of power and takes right off with no hesitation. Going down the road at say 40 in third, put it to the floor, no sputter, stumble, stutter, nothing just powers on with no problem. 3 answers. 87 chevy 350 tbi will only start if if pour gas in the throddle body then keep it running by pumping the peddle. It seems to starve at higher rpms, and when it does idle the rpm's swing from hig. Sounds like the fuel pump is going bad (or in this case,has gone bad). Sep 2, 2004. #5. Re: What should timing advance be on a 5.7L 350 merc (chev/GM) You have vortec heads on your new engine. They need 4 degrees less advance than the old style heads. 28 degrees is max recommended advance on vortecs, and 32 degrees on older heads. 1990 Chevrolet C1500 -- 350 V8 TBI-- Regular Cab, Short Bed, 2 wheel drive, 89200 ...Apr 17, 2019 · 1993 K1500 Sierra 350 TBI with 174k miles. Engine has been rebuilt with around 35k on the rebuild. It has an RV cam and high volume oil pump. Other than that it is stock. I just received the truck from my dad and im trying to diagnose some issues it has had for some time. About Stalling Tbi 350. Длинна электрода, мм. combined with new fuel injectors, the tbs 10201 injector spacer and an ac delco 219-607 full gasket kit for the tbi, full tune up, dual exhaust and wow! quick start no matter the weather, very much improved throttle response, 15 mpg (up from 12).. Apr 17, 2019 · 1993 K1500 Sierra 350 TBI with 174k miles. Engine has been rebuilt with around 35k on the rebuild. It has an RV cam and high volume oil pump. Other than that it is stock. I just received the truck from my dad and im trying to diagnose some issues it has had for some time. Custom Chip from TBIChips Problem: Idle Surge , sometimes from 400RPM to 1200 and sometimes from 800 to 900. Eventually flattens out and stops but returns if I blip the throttle. Rich condition at idle . Black smoke after the surge sequence. Worse when engine warm. . Custom Chip from TBIChips Problem: Idle Surge , sometimes from 400RPM to 1200 and sometimes from 800 to 900. Eventually flattens out and stops but returns if I blip the throttle. Rich condition at idle . Black smoke after the surge sequence. Worse when engine warm. . 1) the computer is not receiving a signal it needs to supply spark and injector pulse at "Start" and "Run". 2) or the computer is not sending out the signal to the injectors and coil. I have a spare computer, condition unknown, plugged it in, no change. My TBI system is typical GM TBI, except for the coil.Jun 23, 2010 · ALL RWD,4 B BODIES!!! 1995 white 9c1 24 inch rims, muffler delete 4-20-09,hollowed cats, touchscreen, kicker cvx 15 2000 watt rms DD 1991 CAPRICe CLASSIC 1st B Body all original 350 tbi over 200,000 custom 20's sold it in like '06 and hate myself for it!!! from 250hp to 260hp the fuel pressure should be bumped up to 13-14psi on stock 350 truck injectors which will change their flow rating to 60lb/hr From 270hp to 340hp you need to change the fuel pump as the stock pump can't maintain pressure over 270hp and you need to run 18psi on the 350 truck injectors for a flow rate of 72lb/hrRe: 90 chevy k1500 350 tbi fuel problem starts but wont... Ok, the one thing you didn't change is the pick-up coil in the distributor The ECM relies on a trigger signal from the ditributor, thats made by the pick-up, to close the pump relay and keep the pump running. The oil pressure sender can also operate the pump after it "sees" enough oil ... Dec 9, 2011. 291. Damon said: On a cold start it's running in open loop (pre-programmed tables, no reference to the O2). Plus, when the engine is cold it's calling for a higher idle speed and richer mixture than when it's fully warmed up at curb idle. Surging at idle sounds like it's bouncing off of the "stall save" in the idle programming.Engine specs: 5.7 Mercruiser EFI Stern Drive, Bravo III. Engine serial number 0M033393. Throttle body injection. The symptons are: When I start the engine from cold, I allow the engine to warm up at idle. This goes smoothly everytime. When I rev up the engine, either in neutral or under load, the engine works fine.Apr 15, 2021 · Alrighty, so I have a 1995 k2500 Silverado with 350 tbi. this thing is surging and its always a 50/50 chance of it stalling out when ever I come to a stop or get into reverse, it has just under 238k on the engine and its only does this at idle when i have my foot on the gas pedal it doesn't surge at all but once it idles or its just sitting ... Just finished a 350 TBI / 700R4 / 3.8 Atlas II transplant last Sunday. Dragged the CJ-7 up to Northern California and ran the Rubicon last week. All went well except I experienced the engine...Discussion Starter · #1 · Feb 17, 2020 1991 K5 TBI 350 with SM465. One out of five times the idle will seem to fall out when taking it out of gear and coming to a stop. It feels like a misfire. It will correct itself after about 5 seconds, can usually correct it a little quicker by revving.Aug 11, 2015 · Checking the fuel pressure with a suitable gauge will provide the answer. Could be the pressure regulator, fuel pump, or a restriction such as a plugged in-line fuel filter, plugged tank filter sock, severely kinked hose or sticking tank selector valve. Measure the fuel pressure before throwing more parts at it. Mar 23, 2002 · it feels like its somewhat surging or jumping ahead like it has very slight power boosts and lulls. This is very subtle. If you gas it hard it has plenty of power and takes right off with no hesitation. Going down the road at say 40 in third, put it to the floor, no sputter, stumble, stutter, nothing just powers on with no problem. Chevy 350 Vin Code K Truck TBI 1991-1995 Engine Master Kit 3 in my S-10 blazer the TBI crapped out with a crack in the lower body, so I put a rotenchester on it until I could rebuild the TBI as memory serves me and it is a little fuzzy On later model vehicles, a check engine light may accompany the issue SM420 Daily driver 10k miles a year SM420 Daily driver 10k miles a year.Apr 17, 2019 · 1993 K1500 Sierra 350 TBI with 174k miles. Engine has been rebuilt with around 35k on the rebuild. It has an RV cam and high volume oil pump. Other than that it is stock. I just received the truck from my dad and im trying to diagnose some issues it has had for some time. After trying several other fixes I finally diagnosed and repaired the problem part. The throttle body gasket had broken and was letting in too much air caus...Custom Chip from TBIChips Problem: Idle Surge , sometimes from 400RPM to 1200 and sometimes from 800 to 900. Eventually flattens out and stops but returns if I blip the throttle. Rich condition at idle . ... . . 3 answers. 87 chevy 350 tbi will only start if if pour gas in the throddle body then keep it running by pumping the peddle.Apr 17, 2019 · 1993 K1500 Sierra 350 TBI with 174k miles. Engine has been rebuilt with around 35k on the rebuild. It has an RV cam and high volume oil pump. Other than that it is stock. I just received the truck from my dad and im trying to diagnose some issues it has had for some time. When turning the key to the "on" position the fuel pump ...Checking the fuel pressure with a suitable gauge will provide the answer. Could be the pressure regulator, fuel pump, or a restriction such as a plugged in-line fuel filter, plugged tank filter sock, severely kinked hose or sticking tank selector valve. Measure the fuel pressure before throwing more parts at it.Checking the fuel pressure with a suitable gauge will provide the answer. Could be the pressure regulator, fuel pump, or a restriction such as a plugged in-line fuel filter, plugged tank filter sock, severely kinked hose or sticking tank selector valve. Measure the fuel pressure before throwing more parts at it.'91 TBI 350 surging at idle and stumbling at speed 21 - 40 of 64 Posts Prev 1 2 3 4 Next Binder Registered Joined Sep 10, 2000 2,988 Posts #21 · Jun 3, 2008 You could try this to test the MAP sensor. Use a vacuum pump. 0" vacuum - 5.00v 5" vacuum - 3.7v 10" vacuum - 2.8v 15" vacuum - 2.1v 20" vacuum - 1.0v S.N.O.R.T. T TexasA&M Registered1988 Chevy R-30, 454 7.4 TBI with 95,000 miles, and a 4-speed manual trans. For several years now I have had a surging problem while accerlating, it skips and misfires while idling, it started off a small problem, and all I had to do to correct the problem is let the truck warm up to normal...1993 K1500 Sierra 350 TBI with 174k miles Engine has been rebuilt with around 35k on the rebuild. It has an RV cam and high volume oil pump. ... I have to hold the brake and give it gas to about 1000 rpm so it wont have the surging idle. It has a 195 degree thermostat but seems to never reach full operating temp. From the gauge cluster it looks ...In the tech section there are the manuals for our trucks along with the wiring diagrams if you do not have them. Logged. #1: The easiest and most obvious solution to any problem is 99% of the time correct. #2: There is no such thing as impossible, it just takes longer. 74 k10, 77k10 Tom.It basically almost dies out, and then surges back to life (probably a little higher than normal idle), then repeats continuously until you apply some throttle. If I had to guess, I'd say it's a dirty throttle body, or possibly injecters. If it is one of these, what would be the best way to clean them?.Just finished a 350 TBI / 700R4 / 3.8 Atlas II transplant last Sunday. Dragged the CJ-7 up to Northern California and ran the Rubicon last week. All went well except I experienced the engine surging at idle. This was quite bothersome descending hills in low range/first.. "/> Just picked up a new to me 1986 RD688S dump with an E6-350. At idle the truck surges up and down bouncing from 400rpm to about 600rpm..just up and down up and down. Truck runs good and strong...but the idle is hard to get used to...any fixes or known problems that causes this?Custom Chip from TBIChips Problem: Idle Surge , sometimes from 400RPM to 1200 and sometimes from 800 to 900. Eventually flattens out and stops but returns if I blip the throttle. Rich condition at idle . Black smoke after the surge sequence. Worse when engine warm. . Mar 31, 2003 · It ran great for a few minutes, then started making some scary noises, sounded like valvetrain problems. Set the timing back to where it was before, disconnecting the tan ALDL on the firewall so the comp wouldnt set it back. It ran well, then a few minutes later started surging real bad, acted like it was running out of gas, jumping around a lot. Chevy 350 Vin Code K Truck TBI 1991-1995 Engine Master Kit 3 in my S-10 blazer the TBI crapped out with a crack in the lower body, so I put a rotenchester on it until I could rebuild the TBI as memory serves me and it is a little fuzzy On later model vehicles, a check engine light may accompany the issue SM420 Daily driver 10k miles a year SM420 Daily driver 10k miles a year.1988 Chevy R-30, 454 7.4 TBI with 95,000 miles, and a 4-speed manual trans. For several years now I have had a surging problem while accerlating, it skips and misfires while idling, it started off a small problem, and all I had to do to correct the problem is let the truck warm up to normal...Apr 17, 2019 · 1993 K1500 Sierra 350 TBI with 174k miles. Engine has been rebuilt with around 35k on the rebuild. It has an RV cam and high volume oil pump. Other than that it is stock. I just received the truck from my dad and im trying to diagnose some issues it has had for some time. Aug 11, 2015 · Checking the fuel pressure with a suitable gauge will provide the answer. Could be the pressure regulator, fuel pump, or a restriction such as a plugged in-line fuel filter, plugged tank filter sock, severely kinked hose or sticking tank selector valve. Measure the fuel pressure before throwing more parts at it. Aug 11, 2015 · Checking the fuel pressure with a suitable gauge will provide the answer. Could be the pressure regulator, fuel pump, or a restriction such as a plugged in-line fuel filter, plugged tank filter sock, severely kinked hose or sticking tank selector valve. Measure the fuel pressure before throwing more parts at it. 1988 Chevy 350 tbi idle adjustment? simply put you can't if it is idleing not normal their is a problem surging/hunting idle=fuel pump/filter high idle =vacuum leak or sometimes fuel pumpJun 02, 2008 · This weekend I put a new idle air control valve and o2 sensor in, and the symptoms still persist. Along with the erratic idle, the engine has absolutely zero power. It stumbles as if it's missing a couple of cylinders when you accelerate. It has a hard time with ANY load (even the A/C compressor). Jun 22, 2021 · There is a good chance that your Chevy 350 TBI is bogging due to a lack of fuel. The filter screens in the fuel tank can gradually get gummed up. Moreover, the fuel pumps have a limited lifetime. Check the fuel pressure to verify if the TBI is indeed going out of fuel. Often, the fuel pumps and fuel pressure regulators can go bad. 1987 tbi 350 manual trans surging idel and at 3200 rpm the truck runs great.I have replaced every sensor, wires, distibutor,intake with a after … read more Mike S. Chevy Mechanic Vocational, Technical or Tra... 2,390 satisfied customers Show more Disclaimer: Information in questions answers, and Show LessIt ran great for a few minutes, then started making some scary noises, sounded like valvetrain problems. Set the timing back to where it was before, disconnecting the tan ALDL on the firewall so...What causes a 1988 c2500 2wd 350 TBI to flood on tip - in and run fine on all other throttle postions? I have spent $ - computer, 02 sensor, NEW dist. - plugs wires - etc. checked TBI gaskets but not rebuilt the TBI. ... unplug the vacuum hose to it and if the surging goes away replace the EGR valve. Top. Schurkey HotPass Posts: 1682 Joined ...Checking the fuel pressure with a suitable gauge will provide the answer. Could be the pressure regulator, fuel pump, or a restriction such as a plugged in-line fuel filter, plugged tank filter sock, severely kinked hose or sticking tank selector valve. Measure the fuel pressure before throwing more parts at it.Just finished a 350 TBI / 700R4 / 3.8 Atlas II transplant last Sunday. Dragged the CJ-7 up to Northern California and ran the Rubicon last week. All went well except I experienced the engine surging at idle. This was quite bothersome descending hills in low range/first.. "/> New IAC, coolant temp , and rebuilt TBI.... About Stalling Tbi 350. Длинна электрода, мм. combined with new fuel injectors, the tbs 10201 injector spacer and an ac delco 219-607 full gasket kit for the tbi, full tune up, dual exhaust and wow! quick start no matter the weather, very much improved throttle response, 15 mpg (up from 12).. 1967 Chevy Van V8 350 Engine Conversion Wiring Saturday August 20, 2016 Guerneville CA. Engine wiring hooked up… (2,441) Steelhead Fishing On the Russian River, CA. Saturday, Jan. 19, 2013, Monte Rio, CA. Kayaking Monte Rio… (2,337) One Way Snakes Catch and Eat Fish Monday, Dec. 3, 2012, Jenner, CA. These snakes sure seem…Just finished a 350 TBI / 700R4 / 3.8 Atlas II transplant last Sunday. Dragged the CJ-7 up to Northern California and ran the Rubicon last week. All went well except I experienced the engine surging at idle. This was quite bothersome descending hills in low range/first.. "/> bsa air rifles review. 12 volt air compressor for car tires ...boat surges and slows or has trouble accelerating over a certain speed. sometimes misfires/backfires when having these other symptoms. Your fuel pump is whining. well I have found that in the majority of the cases I have seen the actual problem is the very small filter on the fuel intake side of the fuel pump.It basically almost dies out, and then surges back to life (probably a little higher than normal idle), then repeats continuously until you apply some throttle. If I had to guess, I'd say it's a dirty throttle body, or possibly injecters. If it is one of these, what would be the best way to clean them?. The truck registers one code (44) witch means it is running lean, and that doesn't make sense to me. What I believe is causing the problem is the map sensor, tps sensor, or the iac valve. I'm not positive that these are the culprits, so any advice would help. LATECH Administrator Joined Jul 19, 2010 8,540 Posts #2 · Jan 29, 2011Alrighty, so I have a 1995 k2500 Silverado with 350 tbi. this thing is surging and its always a 50/50 chance of it stalling out when ever I come to a stop or get into reverse, it has just under 238k on the engine and its only does this at idle when i have my foot on the gas pedal it doesn't surge at all but once it idles or its just sitting still it surges.New IAC, coolant temp , and rebuilt TBI....Information on the Chevrolet 305 V8 Engine . Engine Specs for the Chevy 305 V8. Chevrolet 1970-1979; ... Inspired by the popular Chevy 350 , the 305 had a more narrow bore and was placed in many wide-bodied GM model cars. The Chevrolet Camaro, Caprice, Malibu, El Camino and Monte Carlo implemented the 305 along with the Pontiac Firebird and Grand.The truck registers one code (44) witch means it is running lean, and that doesn't make sense to me. What I believe is causing the problem is the map sensor, tps sensor, or the iac valve. I'm not positive that these are the culprits, so any advice would help. LATECH Administrator Joined Jul 19, 2010 8,540 Posts #2 · Jan 29, 2011About Stalling Tbi 350. Длинна электрода, мм. combined with new fuel injectors, the tbs 10201 injector spacer and an ac delco 219-607 full gasket kit for the tbi, full tune up, dual exhaust and wow! quick start no matter the weather, very much improved throttle response, 15 mpg (up from 12).. 347,000 MILES. Ok here is my issue I have a 1993 k1500 with a 5.7 tbi when at idle it has a low to the idle. It flacuates between 350 and 1000 rpm. I has so far replaced distributor, cap, rotor, plugs, wires, cts, iac, o2 sensor, map sensor and tps. I have checked and cleaned all of the grounds, reset the timing, check fuel pressure, checked ...Apr 17, 2019 · 1993 K1500 Sierra 350 TBI with 174k miles. Engine has been rebuilt with around 35k on the rebuild. It has an RV cam and high volume oil pump. Other than that it is stock. I just received the truck from my dad and im trying to diagnose some issues it has had for some time. 91 Chevy C1500 ext cab, TBI 350, NV4500, 2in suspension lift. (DD) It is possible that the TB is wore out and it is leaking past the throttle plates or through the throttle plate shafts but given the evidence I think the leak is a lot larger. You seem to have ruled out a leaky intake gasket. Alrighty, so I have a 1995 k2500 Silverado with 350 tbi . this thing is surging and its always a 50/50 chance of it stalling out when ever I come to a stop or get into reverse, it has just under 238k on the engine and its only does this at idle when i have my foot on the gas pedal it doesn't surge at all but once it idles or its just sitting still it surges. Chevy 350 Vin Code K Truck TBI 1991-1995 Engine Master Kit 3 in my S-10 blazer the TBI crapped out with a crack in the lower body, so I put a rotenchester on it until I could rebuild the TBI as memory serves me and it is a little fuzzy On later model vehicles, a check engine light may accompany the issue SM420 Daily driver 10k miles a year SM420 Daily driver 10k miles a year.for a GM TBI application to read the data, or to check for stored codes. Consult a service manual or see below for any check engine light code definitions. You can use a late 80's or early 90's GM TBI definition. If you have access to a scan tool use a hook up for a 1990 350 cu. in. 5.7L Chevrolet truck.What causes a 1988 c2500 2wd 350 TBI to flood on tip - in and run fine on all other throttle postions? I have spent $ - computer, 02 sensor, NEW dist. - plugs wires - etc. checked TBI gaskets but not rebuilt the TBI. ... unplug the vacuum hose to it and if the surging goes away replace the EGR valve. Top. Schurkey HotPass Posts: 1682 Joined ...Just finished a 350 TBI / 700R4 / 3.8 Atlas II transplant last Sunday. Dragged the CJ-7 up to Northern California and ran the Rubicon last week. All went well except I experienced the engine surging at idle. This was quite bothersome descending hills in low range/first.. "/> Mar 31, 2003 · It ran great for a few minutes, then started making some scary noises, sounded like valvetrain problems. Set the timing back to where it was before, disconnecting the tan ALDL on the firewall so the comp wouldnt set it back. It ran well, then a few minutes later started surging real bad, acted like it was running out of gas, jumping around a lot. Re: 90 chevy k1500 350 tbi fuel problem starts but wont... Ok, the one thing you didn't change is the pick-up coil in the distributor The ECM relies on a trigger signal from the ditributor, thats made by the pick-up, to close the pump relay and keep the pump running. The oil pressure sender can also operate the pump after it "sees" enough oil ... Alrighty, so I have a 1995 k2500 Silverado with 350 tbi. this thing is surging and its always a 50/50 chance of it stalling out when ever I come to a stop or get into reverse, it has just under 238k on the engine and its only does this at idle when i have my foot on the gas pedal it doesn't surge at all but once it idles or its just sitting still it surges.Apr 17, 2019 · 1993 K1500 Sierra 350 TBI with 174k miles. Engine has been rebuilt with around 35k on the rebuild. It has an RV cam and high volume oil pump. Other than that it is stock. I just received the truck from my dad and im trying to diagnose some issues it has had for some time. About Stalling Tbi 350. Длинна электрода, мм. combined with new fuel injectors, the tbs 10201 injector spacer and an ac delco 219-607 full gasket kit for the tbi, full tune up, dual exhaust and wow! quick start no matter the weather, very much improved throttle response, 15 mpg (up from 12).. Custom Chip from TBIChips Problem: Idle Surge , sometimes from 400RPM to 1200 and sometimes from 800 to 900. Eventually flattens out and stops but returns if I blip the throttle. Rich condition at idle . Black smoke after the surge sequence. Worse when engine warm. . New IAC, coolant temp , and rebuilt TBI.... Well here is a basic guideline. Stock 210hp 350 V8 up to 250hp the stock 55lb 350 truck injectors at the factory 11-12psi is fine. from 250hp to 260hp the fuel pressure should be bumped up to 13-14psi on stock 350 truck injectors which will change their flow rating to 60lb/hr. Good evening, everyone… I'm at a complete loss. I have a 1988 5.7L Chevrolet TBI truck with about 150,000 miles on the truck and about 70,000 on the engine. Although not the original engine, it's about 18 years old and I recently resealed a good bit of the engine (someone else did the work).1) the computer is not receiving a signal it needs to supply spark and injector pulse at "Start" and "Run". 2) or the computer is not sending out the signal to the injectors and coil. I have a spare computer, condition unknown, plugged it in, no change. My TBI system is typical GM TBI, except for the coil.Dec 9, 2011. 291. Damon said: On a cold start it's running in open loop (pre-programmed tables, no reference to the O2). Plus, when the engine is cold it's calling for a higher idle speed and richer mixture than when it's fully warmed up at curb idle. Surging at idle sounds like it's bouncing off of the "stall save" in the idle programming.May 11, 2003. Messages. 56. Sep 2, 2004. #5. Re: What should timing advance be on a 5.7L 350 merc (chev/GM) You have vortec heads on your new engine. They need 4 degrees less advance than the old style heads. 28 degrees is max recommended advance on vortecs, and 32 degrees on older heads.The truck registers one code (44) witch means it is running lean, and that doesn't make sense to me. What I believe is causing the problem is the map sensor, tps sensor, or the iac valve. I'm not positive that these are the culprits, so any advice would help. LATECH Administrator Joined Jul 19, 2010 8,540 Posts #2 · Jan 29, 2011Here's a list of the pins but they are also on the wiring diagrams above. A1- grn/wht- this wire is used to energize the fuel pump relay. A2- not used. A3- not used. A4- gry- to EGR relay. (optional) This is a ground from the ECM to control the EGR relay. A5- brn/wht- SES (service eng soon) light. boat surges and slows or has trouble accelerating over a certain speed. sometimes misfires/backfires when having these other symptoms. Your fuel pump is whining. well I have found that in the majority of the cases I have seen the actual problem is the very small filter on the fuel intake side of the fuel pump.Aug 11, 2015 · Checking the fuel pressure with a suitable gauge will provide the answer. Could be the pressure regulator, fuel pump, or a restriction such as a plugged in-line fuel filter, plugged tank filter sock, severely kinked hose or sticking tank selector valve. Measure the fuel pressure before throwing more parts at it. Search: 350 Tbi Stalling. When engine hot on the highway, when second venturi of carb is opened the engine seems to die momentarily Transportation → Autos & motorcycles → Auto and truck parts, maintenance, and tuning → Car and truck engine maintenance → Auto engine troubleshooting → Engine stalling 1 996 chevy 350 tbi engine, will start, idle roughly, once put into gear will die ...3 answers. 87 chevy 350 tbi will only start if if pour gas in the throddle body then keep it running by pumping the peddle. It seems to starve at higher rpms, and when it does idle the rpm's swing from hig. Sounds like the fuel pump is going bad (or in this case,has gone bad).for a GM TBI application to read the data, or to check for stored codes. Consult a service manual or see below for any check engine light code definitions. You can use a late 80’s or early 90’s GM TBI definition. If you have access to a scan tool use a hook up for a 1990 350 cu. in. 5.7L Chevrolet truck. About Stalling Tbi 350. Длинна электрода, мм. combined with new fuel injectors, the tbs 10201 injector spacer and an ac delco 219-607 full gasket kit for the tbi, full tune up, dual exhaust and wow! quick start no matter the weather, very much improved throttle response, 15 mpg (up from 12).. Hope for some help. Installed the EFI on a restoration Mastercraft with a new 350 Vortec. Initial setup was over a month ago and all seemed well. Once I finished the rest of the restoration, I tried to start this week. I'm getting surging and will stall within 45 seconds, flashing no data. Reading the forums, I tried to isolate the wires. I reran the alternator wire under the engine, away from ...About Stalling Tbi 350. Длинна электрода, мм. combined with new fuel injectors, the tbs 10201 injector spacer and an ac delco 219-607 full gasket kit for the tbi, full tune up, dual exhaust and wow! quick start no matter the weather, very much improved throttle response, 15 mpg (up from 12).. Custom Chip from TBIChips Problem: Idle Surge , sometimes from 400RPM to 1200 and sometimes from 800 to 900. Eventually flattens out and stops but returns if I blip the throttle. Rich condition at idle . Black smoke after the surge sequence. Worse when engine warm. . May 11, 2003. Messages. 56. Sep 2, 2004. #5. Re: What should timing advance be on a 5.7L 350 merc (chev/GM) You have vortec heads on your new engine. They need 4 degrees less advance than the old style heads. 28 degrees is max recommended advance on vortecs, and 32 degrees on older heads.Aug 11, 2015 · Checking the fuel pressure with a suitable gauge will provide the answer. Could be the pressure regulator, fuel pump, or a restriction such as a plugged in-line fuel filter, plugged tank filter sock, severely kinked hose or sticking tank selector valve. Measure the fuel pressure before throwing more parts at it. Sep 2, 2004. #5. Re: What should timing advance be on a 5.7L 350 merc (chev/GM) You have vortec heads on your new engine. They need 4 degrees less advance than the old style heads. 28 degrees is max recommended advance on vortecs, and 32 degrees on older heads. 1990 Chevrolet C1500 -- 350 V8 TBI-- Regular Cab, Short Bed, 2 wheel drive, 89200 ...boat surges and slows or has trouble accelerating over a certain speed. sometimes misfires/backfires when having these other symptoms. Your fuel pump is whining. well I have found that in the majority of the cases I have seen the actual problem is the very small filter on the fuel intake side of the fuel pump.Re: 90 chevy k1500 350 tbi fuel problem starts but wont... Ok, the one thing you didn't change is the pick-up coil in the distributor The ECM relies on a trigger signal from the ditributor, thats made by the pick-up, to close the pump relay and keep the pump running. The oil pressure sender can also operate the pump after it "sees" enough oil ... 92 k1500 350 tbi throttle surging. Jump to Latest Follow 1 - 6 of 6 Posts. 9. 92IFS ... Discussion Starter · #1 · Aug 15, 2013. Only show this user. I recently purchased a 92 k1500 with a 350 tbi and 165,000 miles...had a slight rough idle and occasional stall so i replaced the idle air control valve. Now the idle is very erratic, bounces ...Jun 22, 2021 · There is a good chance that your Chevy 350 TBI is bogging due to a lack of fuel. The filter screens in the fuel tank can gradually get gummed up. Moreover, the fuel pumps have a limited lifetime. Check the fuel pressure to verify if the TBI is indeed going out of fuel. Often, the fuel pumps and fuel pressure regulators can go bad. It flacuates between 350 and 1000 rpm. I has so far replaced distributor, cap, rotor, plugs, wires, cts, iac, o2 sensor, map sensor and tps. I have checked and cleaned all of the grounds, reset the timing, check fuel pressure, checked. Quincy Media's ABC affiliate WPTA Fort Wayne, Ind. 20 Hp Briggs And Stratton Engine Surging.Once the motor is warm (350 tbi) the idle wants to surge. I would say that is varies a few 100 rpm. It is idling and then it almost dies, and then goes back to idle. ... old style 350/rpmheads with a holley tbi, block huggerstyle like on a hotrod they resemble manifolds, the exhaust is 2.5" tubes in to a single 3". The sensor is in the exhaust. Custom Chip from TBIChips Problem: Idle Surge , sometimes from 400RPM to 1200 and sometimes from 800 to 900. Eventually flattens out and stops but returns if I blip the throttle. Rich condition at idle . Black smoke after the surge sequence. Worse when engine warm. . Discussion Starter · #1 · Feb 17, 2020 1991 K5 TBI 350 with SM465. One out of five times the idle will seem to fall out when taking it out of gear and coming to a stop. It feels like a misfire. It will correct itself after about 5 seconds, can usually correct it a little quicker by revving.It basically almost dies out, and then surges back to life (probably a little higher than normal idle), then repeats continuously until you apply some throttle. If I had to guess, I'd say it's a dirty throttle body, or possibly injecters. Hey guys I have been having the same surging issue from dead stop for months.. I just allow for the slow acceleration time as the truck is old and mechanics are expensive.. ... I have 1994 Silverado USA show truck 350 TBI, 172,000 miles. Fought the missing backfire issue for a year, ran smooth while warm up, then miss and bog when accelerating ...Apr 17, 2019 · 1993 K1500 Sierra 350 TBI with 174k miles. Engine has been rebuilt with around 35k on the rebuild. It has an RV cam and high volume oil pump. Other than that it is stock. I just received the truck from my dad and im trying to diagnose some issues it has had for some time. About Stalling Tbi 350. Длинна электрода, мм. combined with new fuel injectors, the tbs 10201 injector spacer and an ac delco 219-607 full gasket kit for the tbi, full tune up, dual exhaust and wow! quick start no matter the weather, very much improved throttle response, 15 mpg (up from 12).. Good evening, everyone… I'm at a complete loss. I have a 1988 5.7L Chevrolet TBI truck with about 150,000 miles on the truck and about 70,000 on the engine. Although not the original engine, it's about 18 years old and I recently resealed a good bit of the engine (someone else did the work).After trying several other fixes I finally diagnosed and repaired the problem part. The throttle body gasket had broken and was letting in too much air caus...hello,i have a 1987 chevy 1 ton work truck that has 350 tbi and i am having problems,over the year when i would crank it up and go down the road it would surge alittle but would clear up i a minute or so,well this morning i went to crank it up it cranked fine but started surging up and down and gets worse,when i try to give it gas it will die,but …Jun 11, 2008 · TBI fuel pumps (Carter p/n 740000 ) aren't terribly expensive, but throwing money and parts at it until something sticks just isn't the answer I'm afraid. Finding a shop with a GM Tech II to scan that thing would be in your best interest. Apr 17, 2019 · 1993 K1500 Sierra 350 TBI with 174k miles. Engine has been rebuilt with around 35k on the rebuild. It has an RV cam and high volume oil pump. Other than that it is stock. I just received the truck from my dad and im trying to diagnose some issues it has had for some time. When turning the key to the "on" position the fuel pump primes for around ... Just finished a 350 TBI / 700R4 / 3.8 Atlas II transplant last Sunday. Dragged the CJ-7 up to Northern California and ran the Rubicon last week. All went well except I experienced the engine surging at idle. This was quite bothersome descending hills in low range/first.. "/> It basically almost dies out, and then surges back to life (probably a little higher than normal idle), then repeats continuously until you apply some throttle. If I had to guess, I'd say it's a dirty throttle body, or possibly injecters. If it is one of these, what would be the best way to clean them?. About Stalling Tbi 350. Длинна электрода, мм. combined with new fuel injectors, the tbs 10201 injector spacer and an ac delco 219-607 full gasket kit for the tbi, full tune up, dual exhaust and wow! quick start no matter the weather, very much improved throttle response, 15 mpg (up from 12).. Re: 90 chevy k1500 350 tbi fuel problem starts but wont... Ok, the one thing you didn't change is the pick-up coil in the distributor The ECM relies on a trigger signal from the ditributor, thats made by the pick-up, to close the pump relay and keep the pump running. The oil pressure sender can also operate the pump after it "sees" enough oil ...