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Why does my 91 Chevy 1500 die at idle?

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Why does my 91 Chevy 1500 die at idle?

WORKING ON MY 91 CHEVY 1500 4BY4 . MY PROBLEM IS THE MOTOR DIES AT IDLE IT HAS THE 5.7 TBI. WHEN YOU LET THE MOTOR WARM UP IT WILL JUST DIE OUT AFTER ABOUT 5 MINUTES IDLE TIME BUT WILL START RIGHT BACK UP THEN DIE AGAIN MAYBE 2 MINUTES LATER. IF I PUT IT RIGHT IN DRIVE AND GO IT WILL RUN FIND UNTIL I HAVE TO STOP THEN IT WILL DIE OUT AGAIN.

Can a stalling engine be intermittent driveability?

Intermittent driveability problems of any kind are always a challenge to diagnose. When a customer brings you a vehicle and complains of a stalling problem, you may not have much to go on other than their description of what’s happening and when it happens.

Why does my Chevy 1500 die in neutral?

I was wondering if it dies in neutral or park with foot off the brake or only at a stop with brake pedal depressed. If it only dies with brake pedal depressed the problem will lie in the brake booster. Since you’re not stepping on the brake when running down the road, the vehicle runs fine and won’t show a code.

What are the symptoms of a failed ignition relay?

One of the most common symptoms of a failed ignition relay is a car that suddenly stalls while operating. If the ignition relay shorts, burns out, or otherwise fails while the engine is operating it will cut off power to the fuel pump and ignition system. This will cause the vehicle to immediately stall due to fuel and spark being cut off.

Intermittent driveability problems of any kind are always a challenge to diagnose. When a customer brings you a vehicle and complains of a stalling problem, you may not have much to go on other than their description of what’s happening and when it happens.

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 my GM Truck shut down while driving?

At a dead stop. It would crank over, but not start. Ran the battery dead trying to crank it. My dad came to help, charged the battery, and it started right up. It sounds wierd but this is what its doing.

How to troubleshot a GM Buick engine that will not start?

Replace any blown fuses and try starting the car. Plug the code scanner cable plug into the OBD (on board diagnostics) port under the dash on the left side of the steering column. Turn the ignition key to the run (on) position, but do not try to start the car. Press the “Read” key on the scanner.

When was the last year the Chevy Cavalier was made?

The Chevrolet Cavalier is a line of small cars produced for the model years 1982 through 2005 by Chevrolet.

What should I do if my Chevy 1500 dies?

TRIED NEW COOLANT TEMP SENSOR AND NEW IAC ALSO CHANGED THE THROTTLE BODY GASKET AND CLEANED THROTTLE BODY. I HAVE ALSO REMOVED ENGINE GROUND AND SANDED CABLE END AND REINSTALLED. I STILL HAVE A HIGH IDLE AND MOTOR STILL DIES IN GEAR AND WAS WANDERING IF I SHOULD ADRESS THE HIGH IDLE ISSUE FIRST OR JUST KEEP AFTER THE ENGINE DYING.

When does a Cavalier radiator fan come on?

The fan can come on at any time even with the key off when the engine is warm. Install a jumper wire to the red wire at the harness connector and the black wire to ground.

Why does my Chevy Cavalier stall at 70 mph?

This week on I-84 at 70 mph, car dies. Was able to coast of an exit ramp. Pulled over, opened the hood, shook the connector, it started right up. Drove it the rest of the week with no issue. Can’t figure out what the deal is, but it is either a connection in the harness, or one of the wires is loose, but it is near impossible to tell.

What’s the problem with my Chevy Cavalier Rs?

I have a 91 Chevy Cavalier RS, 2.2 L. Recently, I’ve noticed an intermittent problem when starting the car (both cold start and warm start). I thought at first it might have been the key, because the keys we had were cheap, badly made Wal-Mart copies so we had a locksmith make an exact replica from the manufacturer’s guide he had.

WORKING ON MY 91 CHEVY 1500 4BY4 . MY PROBLEM IS THE MOTOR DIES AT IDLE IT HAS THE 5.7 TBI. WHEN YOU LET THE MOTOR WARM UP IT WILL JUST DIE OUT AFTER ABOUT 5 MINUTES IDLE TIME BUT WILL START RIGHT BACK UP THEN DIE AGAIN MAYBE 2 MINUTES LATER. IF I PUT IT RIGHT IN DRIVE AND GO IT WILL RUN FIND UNTIL I HAVE TO STOP THEN IT WILL DIE OUT AGAIN.

Why is my Chevy Cavalier running out of gas?

I forgot it running, it ran out of gas and sat until the battery went dead with the key in the “on” position. Now it won’t start. Security light, check gauges and service lights all stay on. Gas gauge doesn’t register any gas (I put 4 gallons in). Very little gas pressure. Has power to the ICM. No power to fuel pump. Any ideas? Thanks.

When does a 2001 Chevy Silverado loose power?

I have a 2001 Chevy Silverado. While driving my truck began to loose power while pressing the gas pedal and eventually died. It would restart but whould then quickly die. My experience tells me it is … read more

What happens when a GM Truck starts then dies?

It starts then dies immediately. Parts replaced so far: fuel pump, fuel filter, spider injectors, fuel regulator, oil pressure switch, ignition switch, ignition module, passlock, fuel pump relay, spark plugs, wires, distributor cap, rotor and ignition coil. Crank sensor is getting power and 50 psi with key in the on position (not running).

Can a 2001 Chevy Silverado die while driving?

Re-start after a few minutes and runs well until driven a short distance, the … read more I have a 2001 Chevy Silverado. While driving my truck began to loose power while pressing the gas pedal and eventually died. It would restart but whould then quickly die.

It starts then dies immediately. Parts replaced so far: fuel pump, fuel filter, spider injectors, fuel regulator, oil pressure switch, ignition switch, ignition module, passlock, fuel pump relay, spark plugs, wires, distributor cap, rotor and ignition coil. Crank sensor is getting power and 50 psi with key in the on position (not running).

TRIED NEW COOLANT TEMP SENSOR AND NEW IAC ALSO CHANGED THE THROTTLE BODY GASKET AND CLEANED THROTTLE BODY. I HAVE ALSO REMOVED ENGINE GROUND AND SANDED CABLE END AND REINSTALLED. I STILL HAVE A HIGH IDLE AND MOTOR STILL DIES IN GEAR AND WAS WANDERING IF I SHOULD ADRESS THE HIGH IDLE ISSUE FIRST OR JUST KEEP AFTER THE ENGINE DYING.

I was wondering if it dies in neutral or park with foot off the brake or only at a stop with brake pedal depressed. If it only dies with brake pedal depressed the problem will lie in the brake booster. Since you’re not stepping on the brake when running down the road, the vehicle runs fine and won’t show a code.

What causes a Chevy Silverado to run rough?

If an oxygen sensor goes bad, it can make your Silverado run too lean (or rich). A super lean running engine will often idle rough. Fuel Injectors. The fuel injection systems job is to atomize the fuel into fine mist.

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

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 idles smoothly, and it runs fine once it’s above about 5-10mph or so.

What should I do about my 1994 Chevy Silverado?

My 94 Chevy Silverado was also sputtering, backfiring, missing etc… I changed the fuel filter to no avail, tried several things to get it to run smooth but nothing helped’ until a friend of mine who used to have his own shop told me about a memo he had received years ago dealing with this identical problem. here’s what worked for me!

If an oxygen sensor goes bad, it can make your Silverado run too lean (or rich). A super lean running engine will often idle rough. Fuel Injectors. The fuel injection systems job is to atomize the fuel into fine mist.

What causes a Chevy Silverado to start without turning the engine?

A fuel delivery problem is usually caused by a clogged fuel filter, no fuel in the tank or a faulty fuel pump. A starter that spins without turning the engine is caused by the starter gear failing to engage the engine’s flywheel.

My 94 Chevy Silverado was also sputtering, backfiring, missing etc… I changed the fuel filter to no avail, tried several things to get it to run smooth but nothing helped’ until a friend of mine who used to have his own shop told me about a memo he had received years ago dealing with this identical problem. here’s what worked for me!

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 idles smoothly, and it runs fine once it’s above about 5-10mph or so.

Why does my 1993 Chevy TBI stall at idle?

Timing is steady and not jumping all over. It is a fuel issue. The only code that ever sets is a P044, lean exhaust, and the exhaust is really lean. We have swapped PCM/PROM with a same year Suburban, no change. Both vehicles run the same as this did using the other’s PCM.

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 fuel pressure be on 1993 Chevy TBI?

Verify there is 18-20 of fuel pressure when you dead head the fuel pump. If low, verify there is good power and ground to the fuel pump and that the fuel filter is clear. Also, make sure that the MAP sensor vacuum port in the throttle body is not restricted.

What’s the idle RPM on a 1993 Chevy truck?

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.

Timing is steady and not jumping all over. It is a fuel issue. The only code that ever sets is a P044, lean exhaust, and the exhaust is really lean. We have swapped PCM/PROM with a same year Suburban, no change. Both vehicles run the same as this did using the other’s PCM.

Why does my Chevy truck idle at all temps?

Could be canister purge is opening at idle when it shouldn’t be check to seeif it is or not the solenoid may be bad it has a red connector and if I remember right will be under hood area. You can block off the vacuum line and if the surging stops you found your problem.

What should fuel pressure be in a 1993 Chevy truck?

Make sure vacuum line going ot map sensor isn’t soft an sucking together. Check bottom of tbi unit for a vacuum leak with choke cleaner they like to blow the gasket also fuel pressure should be 9-11 psi if lower then you may need a pump or filter. Replace the ect sensor if still a problem then scan for codes. helpful? Fuel pressure is at 11 psi.

Why does my Chevy Silverado battery keep dying?

A considerable number of drivers have said the battery on their 2007-2013 Silverado or Sierra dies frequently. This could be caused by problems with the battery or other issues that cause the vehicle to run the battery down. Replacing your battery will cost around $200 and occurs on average at about 33,000 miles.

Are there any problems with the Chevy Silverado?

If this sensor or switch fails, the vehicle will display the service 4WD message. This faulty 4WD issue is among the most common problems with the 2008 Chevy Silverado, according to reports from owners.

What kind of car is a 1991 Chevy Silverado?

This is a one owner 1991 Chevrolet C1500 with one repaint in 2018. It comes with the original window sticker as well as a lot of the maintenance records from day one. | | · Original 5.7 lite…

Where was the 1991 Chevy C / K 1500 last serviced?

Mileage: 167,435 miles Body Type: Pickup Color: White Engine: 8 Cyl 5.7 L Accident reported. Number of owners unknown. Last serviced in Louisburg, NC on 05/28/21 • Vehicle serviced. Mileage: 207,498 miles Body Type: Pickup Color: Gold Engine: 8 Cyl 5.7 L No accident or damage reported to CARFAX.

Are there any parts for a 1991 Chevy c1500?

1988 – 1991 Chevrolet C1500 Center Speedometer Gauge Cluster Unit 25089369 OEM ! (Fits: 1991 Chevrolet C1500) Only 1 left! Only 1 left! Only 1 left!

How old was my Chevy truck when it died?

Had it towed to a friends where we pulled out the Chilton book and began troubleshooting. First thing we replaced was the fuel filter. It was 9 years old and when we blew into it there was a lot of restriction. After that we ran through the tests under Fuel Pump.

Had it towed to a friends where we pulled out the Chilton book and began troubleshooting. First thing we replaced was the fuel filter. It was 9 years old and when we blew into it there was a lot of restriction. After that we ran through the tests under Fuel Pump.

What kind of truck starts and then dies?

I have a 99 c2500 and it starts for a second then dies, I just finished rewiring the entire dash 2 people found this helpful.

What’s the problem with my Chevy 1500 4by4?

NO VACUM LEAKS PLUGGED BOOSTER HOSE SHOT CARB CLEANER ON INTAKE BUT SAME PROBLEM.ONCE ENGINE DIES AFTER FIRST COUPLE OF MINUTES IT DIES OUT IN ABOUT 20 SECONDS IF STARTED UP AGAIN IT WILL DO THE SAME THING DIES OUT I N ABOUT 20 SECONDS. I CLEARD THE TROBLE CODE FOR THE TPS AND IT DID NOT COME BACK ON SO NO TROBLE CODES I AM STUMPED………

What should battery voltage be at high idle?

I STILL HAVE A HIGH IDLE AND MOTOR STILL DIES IN GEAR AND WAS WANDERING IF I SHOULD ADRESS THE HIGH IDLE ISSUE FIRST OR JUST KEEP AFTER THE ENGINE DYING. MY BATTERY VOLTAGE IS A LITTLE LOW ITS AT 11.34 WITH ENGINE OFF AND 12.55 WITH ENGINE IDLING I THINK THATS WAY TO LOW IT SHOULD AT LEAST BE 12+ OFF AND PERHAPS LOW 14S AT IDLE.

What happens when your car is in limp mode?

The will likely force your computer to stall the engine and only allow it to run at low RPMs, which means the car will only move at slow speeds. This is a safety feature enforced by the computer so that your engine doesn’t get too damaged. Related: What is Limp Mode?

Why does my snowmobile lose power when it gets warm?

When it got down to 1/2 tank it started acting up. I pulled the air hose that runs from the right cylinder to the fuel pump, and it was giving me both positive and negative pressure with each revolution. This makes me think that it is not the seals, but I’m no expert.

What causes hesitation and surging on Blazer 4.3L?

Fix Hesitation and surging on Blazer 4.3L If you have Hesitation and surging on Blazer 4.3L and it’s driving like a dog—poor acceleration, hesitation, or a surge and you suspect a fuel problem, you may be partially right.

Why does my Chevy Blazer not go over 20 mph?

Won’t go over 20 mph. Starts right up. New plugs and wires. Never really cuts off. Runs hot but not extremely. Mass air flow is usually an intermitant problem. This sounds more like a stopped up catylist converter. take the cat off and run it, see if it gets hot, most likely that will be the problem]

When does a 2001 Blazer start to bog down?

I have a 2001 Blazer, last week as I was climbing a hill I attempted to accelerate and heard a “pop” and my engine started to bog down. Over this last week the bogging down has got progressively worse but only happens when you attempt to accelerate.

What causes acceleration in a 97 Chevy Blazer?

97 chevy blazer 4.3 idles great but upon acceleration it starts to surge, changed just about everything, fuel pump,cap rotor, wires, plugs distributor injectors, crankshaft, cam, throttle pos. sensor, tried new computer, at a loss starts right up and idles great, take in down the road and starts surging. Exhaust?

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.

What’s the problem with my 91 Chevy 1500?

BEFORE I DID THAT THE MOTOR WOULD DIE OUT AS SOON AS I WOULD PUT IT IN GEAR BUT NOW IT WILL RUN IN GEAR FOR ABOUT 15 SECONDS BEFORE DYING OU T.I LOOKED FOR A VACUUM LEAK BUT FOUND NOTHING. ALSO WHAT IS THE RUNNING PARAMETERS FOR THE IAC,HOW MUCH STEPS AT IDLE AND HOW MUCH VARIATIONS.

NO VACUM LEAKS PLUGGED BOOSTER HOSE SHOT CARB CLEANER ON INTAKE BUT SAME PROBLEM.ONCE ENGINE DIES AFTER FIRST COUPLE OF MINUTES IT DIES OUT IN ABOUT 20 SECONDS IF STARTED UP AGAIN IT WILL DO THE SAME THING DIES OUT I N ABOUT 20 SECONDS. I CLEARD THE TROBLE CODE FOR THE TPS AND IT DID NOT COME BACK ON SO NO TROBLE CODES I AM STUMPED………

Why does my Chevy TBI idle like crap?

The engine is all stock except for the Edelbrock manifold. The truck idles like crap in park, but idles smooth in drive. It seems worse cold then after it warms up. I took it to get smogged (Ca) and it failed (high NO). The tech said it would pass easily with a new cat.

When did the Chevy small block V8 end?

The original small-block Chevy (SBC) V8 was built for decades, spanning from the mid-1950s through the 1990s. But changing times demand changing designs. Increasing efficiency, horsepower, and emissions reduction was the name of the game in the late 1980s and early 1990s, and the camshaft-driven HEI distributor on the SBC was no longer effective.

Is it bad to have a Chevy truck?

Yes, it’s really that bad. It is quite incredible that something you may think of as so dependable, can actually be riddled with an absolute minefield of failings. This is perhaps one the most major issues that quite a few Chevy pickup owners have faced.

What kind of gas does a 1997 Chevy truck use?

1997 chevy c1500 WT with 4.3 . getting harder to re crank.. Only driveable with both stop revving to keep it going. And that still doesnt work well. Work ive done. New cap and rotor. Cleaned…. Exh gas.

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.

Why does my Chevy truck shake at idle?

While the truck is idling with 02 lean, a quick shot of carb spray in the throttle body will cause the 02 to go rich. And when the truck sometimes starts shaking at idle it will smooth out with carb spray. I jst don’t understand why the computer is not trying to richen the mixture up based on the 02 saying lean.

Why does my Chevy truck stall at idle?

Filter is not that old, and if plugged or if pressure regulator is malfunctioning, why do I never see fuel pressure at throttle body so much as waver lower than 12psi? Also, many times the lean condition will start just off idle so bad so that truck wil fall flat on its face and stall.

Why is my GMC Sierra 1500 stalling out?

No change. Next, read somewhere that bad ground wire on Thermostat housing can cause ECM issues. Checked it, cleaned it off, verfied that contact wanhers are all steel and attract a magnet, reinstall the ground wire.

What causes the idle speed to go up or down?

The idle air control valve is programmed to regulate and maintain the engine idle speed at a constant rate. If the valve fails or has any issues it can cause the idle speed to be thrown off. This may result in an unusually high or low idle speed, or in some cases a surging idle speed that repeatedly climbs and falls. 2. Check Engine Light comes on

While the truck is idling with 02 lean, a quick shot of carb spray in the throttle body will cause the 02 to go rich. And when the truck sometimes starts shaking at idle it will smooth out with carb spray. I jst don’t understand why the computer is not trying to richen the mixture up based on the 02 saying lean.

Filter is not that old, and if plugged or if pressure regulator is malfunctioning, why do I never see fuel pressure at throttle body so much as waver lower than 12psi? Also, many times the lean condition will start just off idle so bad so that truck wil fall flat on its face and stall.

What does a GMC Sierra 1500 idle like?

Today experienced a poping sound almost like a backfire from underneath. After the truck starts and is warm at a stable idle in park/neutral it’ll rev up fine. But the stable idle won’t last long, it’ll idle low and rough. Mpg has decreased drastically and give off a rich smell when running.

What does the fuel smell like in a GMC Sierra 1500?

If so pull the air filter off and sniff the throttle body for a fuel smell. If the diaphragm has ruptured it will literally be like putting a hose with fuel into the intake and running it full.

What causes a Chevy 350 to backfire when idle?

If a main vacuum hose such as the power brake booster feed line has broken or failing off it will cause a lean backfire due to the additional air allowed into the engine intake manifold. This problem will be accompanied by high or low engine idle and a harder to push brake pedal than normal.

Today experienced a poping sound almost like a backfire from underneath. After the truck starts and is warm at a stable idle in park/neutral it’ll rev up fine. But the stable idle won’t last long, it’ll idle low and rough. Mpg has decreased drastically and give off a rich smell when running.

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.

If so pull the air filter off and sniff the throttle body for a fuel smell. If the diaphragm has ruptured it will literally be like putting a hose with fuel into the intake and running it full.

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Ruth Doyle