Common questions

Why does my GMC Truck die at idle when warm?

Why does my GMC Truck die at idle when warm?

So I wasn’t suspicious of fuel pressure, then later checked it and I have a steady 10psi from the moment I turn the key until a few seconds after it dies so the fuel pump is good. It runs strong and is fine until I idle. This happens only when the engine is warm and last time I checked it never went into closed loop.

Why does my Chevy Silverado not idle after a cold start?

My 89 Chevy Silverado would not idle after a cold start I took the PCV valve out and sprayed it with carburetor cleaner….no more problems!!! 5 people found this helpful. One of the MOST overlooked parts of these TBI engines is the distributor pickup coil.

What happens when you turn off the gas in a GMC Truck?

If I tap the gas while the fluctuating is happening it goes away for about 10-20 seconds. So I wasn’t suspicious of fuel pressure, then later checked it and I have a steady 10psi from the moment I turn the key until a few seconds after it dies so the fuel pump is good.

What causes a Chevy C / K 1500 to drop in idle?

In order to change these, you have to completely removed the distributor and completely disassemble the distributor to get the pickup off and replace it. These components are very sensitive and when failing, will cause misfire, idle issues, and cause it to burn rich as well. 11 out of 12 issues like this are because of this pickup coil.

Why does my GMC Truck die at idle?

Once the engine is warmed up then it relies on the O2 sensor for air/fuel ratio. A rough idle usually means a vacuum leak. I would check for those especially vacuum lines.

Why does my Chevy Silverado idle and stall when stopping?

I had a trouble code of # 22 t.p.s, I replaced the throttle position sensor, m.a.p sensor, and the idle air control sensor,however i am still having the problem, it is throttle body injected, and there arent any other codes showing up. Any help would be much appreciated. Hello Clay.

If I tap the gas while the fluctuating is happening it goes away for about 10-20 seconds. So I wasn’t suspicious of fuel pressure, then later checked it and I have a steady 10psi from the moment I turn the key until a few seconds after it dies so the fuel pump is good.

How many miles does a GMC TBI 350 have?

Hey guys. So I have a 95 TBI 350 with about 190K miles on it. This started as a surging while driving at constant rpms. Very noticeable in second gear at about 25 mph. The truck has a NV3500 so the whole truck would surge.

So I wasn’t suspicious of fuel pressure, then later checked it and I have a steady 10psi from the moment I turn the key until a few seconds after it dies so the fuel pump is good. It runs strong and is fine until I idle. This happens only when the engine is warm and last time I checked it never went into closed loop.

How often does a 94 S-10 4.3 drop rpm?

After you take it out and drive it, it’ll idle fine for a couple minutes, then will drop a couple hundred rpms every 30 seconds or so for just a count, then back to normal. Any ideas? I’m pulling my hair out.

How is my 1994 S-10 4.3 running?

Starts fine, even today when it was -15, fuel pressure 52 running, holds after shut down, newer plugs/wires/cap rotor, tested MAP sensor and tests good, tested resistance changes in TPS (with sensor out) and changes were smooth along range, unplugged every sensor I could find individually looking for changes, no luck.

Why is my GMC Sierra 1500 stalling and dying?

There is no code given. Have changed the injectors, timing, fuel tank, fuel pump, fuel pump, map sensor, cooling temp sensor on front of block, rebuilt the tbi, air idea valve. None of this hasite helped. The truck starts and dies. Have to give a little gas to keep running. While driving have to 2 foot it so it won’t die.

Why does the engine stall when I put the car in reverse?

If the engine stalls, it may be caused by a faulty idle control valve, bad O2 sensors, or clogged fuel injectors. In regards to the “pan”, we’re not sure what you are referring, so it may be a good idea to contact one of our local professional mechanics to complete a battery inspection to determine what’s going on with your 2010 Ford Focus.

What happens when I put the car in reverse?

Put the car in reverse holding the brake the car stalls, if I go into neutral or drive it works fine. If I put the car in reverse not holding the brake it shifts rough but doesn’t stall. I have not driven the car at speeds higher than 35mph, so not sure of the other gears.

What causes a GMC Jimmy 4.3 engine to die?

Gmc jimmy 4.3 will sometimes die while driving in highway when i let off the accelorater pedal. my 95 blazer when coming to a stop and braking it idles high and rough sounding and it sputters and will clink and clank as stoppung and almost dies no engine light on what could be causing this. Your engine may have a vacuum leak.

Can a 4L80E Trans shift in reverse?

I’ve got a 1992 chevy 2500 4×4 6.5TD/4L80E 3.42 gear The trans shifts great in all forward gears, no codes, and locks up the torque converter as it should. no slipping whatsoever. When put in reverse it clunks like its engaging, then won’t move, no sign of moving. It clunks like its in, but 100% freewheels.

There is no code given. Have changed the injectors, timing, fuel tank, fuel pump, fuel pump, map sensor, cooling temp sensor on front of block, rebuilt the tbi, air idea valve. None of this hasite helped. The truck starts and dies. Have to give a little gas to keep running. While driving have to 2 foot it so it won’t die.

What should the idle rate be on a 1997 GMC Truck?

Underdog, I don’t know the 1997 5.7, but 1000rpm sounds like a high idle, not where it should “bottom out”. A V8 should idle at 500rpm. GoNDown, did you recently disconnect your battery? After I left mine dead in the yard for a while and didn’t charge it, when I started it up it ran like you describe for a few days and then it was fine.

What’s the idle RPM on my Chevy Suburban?

My 1997 Chevy Suburban (5.7) is acting up on me. When I start it up the RPM and idle seem fine. As I let it sit for a couple of seconds the RPM’s slowly begin to drop until they finally bottom out at about 1K. As soon as I put it into Reverse/Drive etc. the RPM’s drop below that mark and it struggles to stay running.

Where is the idle button on a GM TBI?

The “A” and “B” terminals are located on the top right of the connector. Unplug the IAC valve located on the passenger side, rear of the throttle body. Start the engine. Insert a T-30 size Torx driver into the Idle adjustment screw that is located behind the plug removed earlier.

Can a Chevy C / K 1500 run at idle?

There is often a backfire or two when this happens. Pumping the gas does not help. I basically have to crawl through any intersection until it picks up a bit of speed from idle. The truck idles smoothly, and it runs fine once it’s above about 5-10mph or so. If moving at a picking up the speed.

Underdog, I don’t know the 1997 5.7, but 1000rpm sounds like a high idle, not where it should “bottom out”. A V8 should idle at 500rpm. GoNDown, did you recently disconnect your battery? After I left mine dead in the yard for a while and didn’t charge it, when I started it up it ran like you describe for a few days and then it was fine.

What causes a 1994 Chevy C / K 1500 to bog down?

– CarGurus 1994 Chevy C1500 5.7 bogs/backfires when I give it gas. My truck bogs down (and tries to die) when I give it gas to accelerate off of a stop. There is often a backfire or two when this happens. Pumping the gas does not help. I basically have to crawl through any intersection until it picks up a bit of speed from idle. The truck

What’s the temperature of a Toyota truck when it’s cold?

^Ya, when I start my truck dead cold it ildes at about 1600-1700 and then drops to about 900 when fully warm. It runs rough only at idle when warm. When warm, driving normally or just blipping the throttle by hand, it runs just fine.

Why does my Chevy truck run so poorly in cold weather?

Not sure if that would cause the truck to run so poorly in cold weather though. PCV hose is a strong vacuum source, and it will cause a massive vacuum leak (depending on the size of the crack) that will change how the engine operates. It may contribute to your cold weather performance.

What causes fast idle speed when started cold?

The IAC (idle air control) and temp sensor, is what gives the fast idle speed when started cold. Welcome to the board! Did you give the model, year, engine, fuel system type, and transmission information?

Can a Chevy truck run in cold weather?

After its warm it runs just fine. The colder the outside temp. is, the worse the truck runs. Around 20-40 degrees I have to let it fully warm up otherwise its horrible and even stalls out occasionally. If its below 20 degrees it will take awhile to even get it started.

What makes a Chevy 5.7 TBI run cold?

The regulator is spring loaded and if the pressure isnt enough the fuel doesnt even get to the return line.. Its a hell of a lot easier than checking it with a gauge. There is a temperature sensor that tells the computer how to mix fuel/air since the truck does not have a choke. I have had to replace this sensor on a few of my past trucks.

What kind of car stalls after engine heats up?

The Chevrolet Cavalier is a compact automobile produced from 1982 to 2005 by General Motors. car starts and runs fine until engine heats up to operating tempature, then it stalls, it will restart but keeps stalling until engine cools down. What can cause this? Answered!

What causes a car to stall in the morning?

Starts well in the morning but once it gets warm it jerks and slows until itn stops and stalls if you briefly switch off the engine for 3 seconds and restart it it starts well and moves for 3 to 5km and stalls again. It will do so all the way till you get home.

Why does my GMC Sierra 1500 run rough at idle?

The spray smoothing out the rough rpm is an indication of the engine running lean, could be low fuel pressure, could be a vacuum leak. With it running rough at an idle and smoothing out at a higher rpm is a general sign of a vacuum leak.

Why does my GM V8 engine misfire when cold?

Because, GM V8 engines are very prone to a rough idle and engine misfire when cold. The check engine light may also come on, with codes P0300, P0171 and PO174. But, as the engine warms up, the engine misfire or rough idle tends to go away; which seems confusing.

Why does my GMC truck run too lean?

The scanner reads that bank 1 and bank 2 are too lean and some misfires. The running too lean code could be due to the K&N intake I have. A guy told me it may be my fuel pump, but that is a $272 guess that I am not about to make.

Why does my motorcycle engine stall when warm?

And the problem is often worse on a hot day. The dreaded stalling issue when the engine is warm is the most common idle problem and it is mostly related to the very lean air/fuel ratio on the modern fuel injected motorcycle engine. Why does my motorcycle stall at idle when the engine is warmed up and at operating temperature ? – Low compression.

What to do when AC blows warm at idle?

This AC blows warm at idle can happen while you’re waiting for a train to pass or if you’re stuck in bumper to bumper traffic. One option is to place the transmission in PARK. The PCM will then increase engine cooling and get more air across the condenser. Ford also recommends setting the AC to the MAX position and reducing the blower fan speed.

What causes a car to stall at idle?

Once the engine is warmed up to near the half mark on the temp gauge in the dash the car will stall or try to stall if idling for one minute to five minutes. The rpm’s will drop to 500-800, engine will shake, and either stall out or surge up to 1300 rpm’s before going back down to 1000.

What happens to my truck engine when it gets hot?

When the engine is cold it idles fine and runs fine,about after a minute it starts to have a surging idle. At about 2000 rpm the engine feels heavy but once its over 3000 ,it feels as if something was clogged when truck gets hot it idles rough and dies when i stop going along down the road runs fine?

When does a truck stall when it gets warm?

Q: Hesitation/stalling when engine gets warm. Hesitation/stalling when engine gets warm, Usually first it hesitates but it tents to take about an hour of driving before it starts hesitating. Once it starts it will not stop anytime the truck needs more power to go up a hill or to pick up speed.

Why does my Dodge Ram run till warmed up?

When starting truck cold, it runs perfect. After truck warms up starts to idle bad, and also starts making a loud suction noise like a vacuum leak. There’s no vacuum leak ,the noise comes from the throttle body. If I turn off the truck and turn back on , it starts up fine till 5 min. later when it starts all over again.

What causes a truck to stall when gas is released?

The truck idle drops and lopes and occasionally completely stalls. This usually happens when driving slow in town… backing out of parking space, letting off gas when coming to a stop sign or to park etc. It does fine to start and accelerate. I have done a tune up including oil and filter, fuel filter, spark plugs, wires, cap and rotor.

What kind of truck starts and then dies?

Forgot to mention this is a 1995 K1500 5.7 with TBI. When it first start if you give it some gas dose it stay runing?? My 2001 suburban did this it would start and die.

What to do if your car dies while idling?

Engage the parking brake, start the engine, and let it idle. Pop the hood open. Wiggle the battery cables, including the small wire that connects to the car’s body, if your vehicle has one. If the engine shuts off and the headlights stop working while you do this, you are dealing with a loose, corroded or frayed cable or wire.

What causes a car to die at idle?

When a car dies at idle, the last thing that drivers think of is a problem with the spark plugs. Gasoline engines require these small gadgets to deliver a spark to ignite the fuel air mixture in the combustion chamber. If you have a diesel engine, then this is something that you don’t need to worry about.

What to do if your car stalls while idling?

If air can’t go through the air ports when needed, the engine may stall when you reach a stop or while the engine is idling. Locate the IAC around the throttle body. Unplug the IAC solenoid electrical connector. Remove the solenoid from the throttle body.

What causes an engine to die while driving?

On deceleration, engine rpms may fall below normal idle speed and stall. When reaching a stop light, the engine may jerk and die. While driving, the engine may suddenly shut off.

What are the symptoms of a car dying while driving?

You may experience different symptoms: On deceleration, engine rpms may fall below normal idle speed and stall. When reaching a stop light, the engine may jerk and die. While driving, the engine may suddenly shut off.

Who is to blame if your truck shuts off while driving?

Dealers sell cars, they aren’t the ones who use a million made to break products on these, the manufactorers are. And the real people to blame is us, for keep on buying this garbage.

What should I do if my Chevy truck dies?

One thought is if it seems fuel starved you may want to check EVAP system esp. vent and purge solenoids, after it dies, pop the gas cap and see if it feels like tank was pressurized. 9 people found this helpful. Start a new Chevrolet question.

You may experience different symptoms: On deceleration, engine rpms may fall below normal idle speed and stall. When reaching a stop light, the engine may jerk and die. While driving, the engine may suddenly shut off.

On deceleration, engine rpms may fall below normal idle speed and stall. When reaching a stop light, the engine may jerk and die. While driving, the engine may suddenly shut off.

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Ruth Doyle