Common questions

What was the problem with my 1990 Chevy k1500?

What was the problem with my 1990 Chevy k1500?

My old 1990 K1500 had the same stalling problems until I changed the EGR valve. We have a 1990 2wd 350 tbi with similar issues. So far it has a new distributor (for an unrelated problem), idle valve, throttle position sensor, knock sensor, temperature sensor, fuel filter, plugs & wires.

What to do if your Chevy k1500 stall?

Pulled the egr, checked that it held vacuum and no leakage between the ports, replaced the gasket. In neutral it will run indefinitely, although it gets a little rough. Pulling a vacuum line will raise the idle, but doesn’t help when you put it in gear.

Why does my Silverado k1500 stall at traffic lights?

In neutral it will run indefinitely, although it gets a little rough. Pulling a vacuum line will raise the idle, but doesn’t help when you put it in gear. Pulling to a traffic light with the a/c on high, it will idle perfectly for a few seconds, then start gradually dropping, finally shudder and die after 15 -30 seconds.

My old 1990 K1500 had the same stalling problems until I changed the EGR valve. We have a 1990 2wd 350 tbi with similar issues. So far it has a new distributor (for an unrelated problem), idle valve, throttle position sensor, knock sensor, temperature sensor, fuel filter, plugs & wires.

Why does my Chevy k1500 stall in reverse?

A few months ago I started noticing a problem every once in a while when putting the truck in reverse in a parking lot to back out of a spot, it sometimes would stall out if I didn’t hit the gas quick enough after shifting into reverse. When this happened I could put the truck in park and it would immediately fire back up and seemed fine.

In neutral it will run indefinitely, although it gets a little rough. Pulling a vacuum line will raise the idle, but doesn’t help when you put it in gear. Pulling to a traffic light with the a/c on high, it will idle perfectly for a few seconds, then start gradually dropping, finally shudder and die after 15 -30 seconds.

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 Chevy k1500 stall when gas is released?

I have been working on our 89 Chevy K1500 and am still having an idle issue. 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.

What does the 4×4 do not engage on a 1990 Chevy pick up?

Re: The 4×4 do not engage on my 1990 chevy pick up what… On the full size, the front actuator is electric, not vacuum. When in 4wd mode, a switch on top of the transfer case conducts 12 volts out to the actuator. Wire #50 (brown) is the 12v feed, and it conducts to the light blue wire (#900) to the actuator.

Is the 1990 Chevy k1500 5.7 stalling?

I have a 1990 K1500 pickup with the 5.7L engine that I use as a second vehicle and for hauling. It doesn’t get driven every day and usually it’s only used for short trips but now has a stalling problem that I need to figure out.

I have been working on our 89 Chevy K1500 and am still having an idle issue. 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.

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 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 causes hesitation and stumbling in a 1990 Chevy c1500?

An expert that got 10 achievements. Re: 1990 chevy c1500 hesitation and stumbling during… Based on what you said, I would say the engine is starving for fuel. The computer has to be disabled to set timing – there should be a procedure for that. I would start with checking fuel pressure at the throttle body.

How to clear service engine soon light 1990 to 2002 Chevy?

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Why does my Chevy k1500 stall at stop signs?

Not only did that not help, now the problem even seems to be worse, and the truck stalls while idling in park after 20 seconds or so. It will also stall almost every time if I put it in reverse without giving it some gas, and stalls at every traffic light and stop sign. It still always starts right back up after stalling.

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Not only did that not help, now the problem even seems to be worse, and the truck stalls while idling in park after 20 seconds or so. It will also stall almost every time if I put it in reverse without giving it some gas, and stalls at every traffic light and stop sign. It still always starts right back up after stalling.

What is the TBI code on a 1990 Chevy truck?

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. For some scan tools enter VIN 10th“L” 3rd“C” 8th“K”.

Where is the ground on a Chevy C / K 1500?

To the original poster… hope you fixed your issue but if not, there is a ground with a ring terminal and a screw under the dash on the driver’s side right behind the hood latch pull… that’s where your problem is i would almost guarantee it. 9 people found this helpful. Start a new Chevrolet C/K 1500 question.

What was the Chevy C / K pickup truck in 1990?

A 454 SS muscle truck arrived in 1990, with a performance/handling package. The 7.4-liter V8 engine was revised, and could be mated to a 4-speed automatic instead of the prior 3-speed. In the 454 SS, that engine now made 255 horsepower–25 more than in 1990. Sportside trucks with the flare-fendered cargo box could have an extended cab this year.

A 454 SS muscle truck arrived in 1990, with a performance/handling package. The 7.4-liter V8 engine was revised, and could be mated to a 4-speed automatic instead of the prior 3-speed. In the 454 SS, that engine now made 255 horsepower–25 more than in 1990. Sportside trucks with the flare-fendered cargo box could have an extended cab this year.

How to fix a Chevy C / K 1500 with bad ground?

Any ideas??? I can’t take the truck back and leg. They bent me over for the the rebuilt motor to put in it. Did you check and make sure all the ground straps were re- installed? Check and clean your battery terminals and cable ends and have the alternator checked too. 7 people found this helpful.

What causes a car to have black smoke coming from the exhaust?

6 Most Common Causes Of Black Smoke From Exhaust 1. Clogged Air Filters 2. Damaged Fuel Injectors 3. Faulty MAF Sensors 4. Bad EGR Valve 5. Damaged Piston Rings 6. Engine Deposits

What does rough idle mean on a GMC Sierra?

rough idle, stalling, loss of power. o2 sensor code 44 (lean) Replaced: coolant temp sensor, tps, map sensor, fuel filter, and o2 sensor. It will run normal on occasion but only lasts about 45 seconds or so.

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.

6 Most Common Causes Of Black Smoke From Exhaust 1. Clogged Air Filters 2. Damaged Fuel Injectors 3. Faulty MAF Sensors 4. Bad EGR Valve 5. Damaged Piston Rings 6. Engine Deposits

How to help me with a Chevy k1500 misfire?

× Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!

What causes black smoke in the combustion chamber?

Piston Rings are designed to prevent the infiltration of engine oil inside the combustion chamber. If there is any problem with the piston rings, the engine oil starts flowing into the combustion chamber. The combustion of the mixture of this engine oil and the fuel delivers black smoke. 6. Engine Deposits

Why do I have black smoke coming from my tailpipe?

If there is a lack of of air coming into the engine, the fuel will be burnt partially then leads to black smoke from tailpipe. Fuel needs to be burnt fully as it will only emit CO2 and water, which do not cause black smoke. That is why the correct combination of fuel and air is so important if you want to avoid black smoke.

Pulled the egr, checked that it held vacuum and no leakage between the ports, replaced the gasket. In neutral it will run indefinitely, although it gets a little rough. Pulling a vacuum line will raise the idle, but doesn’t help when you put it in gear.

What kind of engine was in 1990 Chevy C / K?

The 7.4-liter V8 engine was revised, and could be mated to a 4-speed automatic instead of the prior 3-speed. In the 454 SS, that engine now made 255 horsepower–25 more than in 1990. 1992 C/K Pickup. Sportside trucks with the flare-fendered cargo box could have an extended cab this year.

What kind of engine does Chevy C / K 1500 have?

For 1997, the optional third door could be ordered on any C/K 1500 model, not just the top-line Silverado. Chevrolet made few changes to the C/K as it readied a replacement for the 1999 model year. At introduction, base engine for the C/K 1500 and 2500 was a 160-horsepower, 4.3-liter V6.

What kind of car is a 1990 Chevy Silverado?

OK, so I bought a 1990 Chevy Silverado with a 5.7L (350) TBI off Craigslist. I knew I’d have to do a lot to get it into shape, but now its kicking my behind.

Why does my 1990 Chevy Silverado not start?

My 90 would not start if the vacuum line to the MAP sensor was disconnected. The MAP is located behind the TBI. Be sure the vacuum hose is in good shape. Mine has to be replaced as the glue no longer worked and it leaked. If you have a vacuum pump, make sure the MAP can hold a vacuum or it needs to be replaced.

Is there a problem with my Ram 1500?

Multiple coolant leaks are one of the more common 2015 RAM 1500 problems, as well as affecting model years 2009-2014. Many owners report that the leaking is strange because it’s difficult to locate even with a pressure test and that the leak only occurs when the engine is cold.

For 1997, the optional third door could be ordered on any C/K 1500 model, not just the top-line Silverado. Chevrolet made few changes to the C/K as it readied a replacement for the 1999 model year. At introduction, base engine for the C/K 1500 and 2500 was a 160-horsepower, 4.3-liter V6.

How to fix a 1990 Chevy 5.7L TBI fuel problem?

It ran long enough to drive up on the trailer while under its own power and it also drove off the trailer on its own power (not that same day I brought home) but you did have to keep foot on throttle otherwise it would stall out and not start again until the next day. 1. New Fuel pump 2. New Fuel filter 3. New Fuel pump relay 4.

What makes a Chevy k1500 engine not start?

Engine will start if you pour gas in throttle body but will only run until gas in intake is gone. New ecm did not come with prom chips not sure if this may be my problem.

What kind of bed does a 1990 Chevy truck have?

The 1990 Chevrolet C/K 1500 truck is available with a regular cab or extended cab, which provides extra seating. The 1990 Chevy truck comes in two- or four-wheel drive and has either a six-and-a-half foot bed or an 8-foot bed.

What kind of engine does a 1990 Chevy truck have?

It produces 230 horsepower with a bore of 4.25 inches and a stroke of 4.0 inches. The Chevrolet truck comes with two doors. The 1990 C/K 1500 regular cab with a six-and-a-half foot bed and the 454 SS has a wheel base of 117.50 inches. The overall length is 194.10 inches.

How much is a Chevrolet C1500 engine control computer?

10% OFF $75. Use Code: DIYSAVE10 Online Ship-to-Home Orders Only Your C1500 is no stranger to hard work and neither are you. Get the most out of your truck by working smarter, not harder. Install a new Chevrolet C1500 engine control module to ensure that your engine is performing to the best of its ability.

Why is my Chevy C / K 1500 not running?

Fuel pump quit working, now headlights aren’t. Battery has 13.1v in it. Cranks over and starts with ether, but no gas. I thought fuel pump was out so I bought a new one but haven’t tackled dropping the tank. Watched a youtube video about weak battery causing fuel pump to not work. So I started checking. I put in a new fuel pump relay.

To the original poster… hope you fixed your issue but if not, there is a ground with a ring terminal and a screw under the dash on the driver’s side right behind the hood latch pull… that’s where your problem is i would almost guarantee it. 9 people found this helpful. Start a new Chevrolet C/K 1500 question.

10% OFF $75. Use Code: DIYSAVE10 Online Ship-to-Home Orders Only Your C1500 is no stranger to hard work and neither are you. Get the most out of your truck by working smarter, not harder. Install a new Chevrolet C1500 engine control module to ensure that your engine is performing to the best of its ability.

What kind of computer does a Chevy ECM use?

Chevrolet vehicles manufactured before 1996 use an internal computer called an Electronic Control Module, and it oversees the automated engine diagnostic routines. A Chevrolet’s ECM can sense problems as they present themselves, and it keeps an ongoing record.

What kind of brake system does Chevy Silverado have?

The Chevrolet Performance front brake system features Brembo ® six-piston, fixed aluminum calipers and larger-than-stock Duralife™ rotors for an 84% increase in brake pad area and a 42% increase in rotor area to increase thermal capacity. The Duralife™ hardened rotor surface helps reduce corrosion and provide quieter braking with less vibration.

The Chevrolet Performance front brake system features Brembo ® six-piston, fixed aluminum calipers and larger-than-stock Duralife™ rotors for an 84% increase in brake pad area and a 42% increase in rotor area to increase thermal capacity. The Duralife™ hardened rotor surface helps reduce corrosion and provide quieter braking with less vibration.

Which is the best brake kit for a truck?

Offering high quality brake kits at an affordable price. A great blend of performance and budget.

What kind of truck was the 1990 Chevy SS?

Gateway Classic Cars of Philadelphia is presenting a 1990 Chevrolet SS 454 pickup for sale. This is a true Classic American Muscle Truck. In 1990 the 454 SS Truck was only available in Onyx Black with the Red interior.

An expert that got 10 achievements. Re: 1990 chevy c1500 hesitation and stumbling during… Based on what you said, I would say the engine is starving for fuel. The computer has to be disabled to set timing – there should be a procedure for that. I would start with checking fuel pressure at the throttle body.

What is the TPS code for a 1990 Chevy c1500?

TPS code 22 low voltage 3. MAP code 34 low voltage. 4. IAC valve stuck. 5. timing is off. problems fixed so far. 1.

Is the C / K 1500 full power while driving?

The truck has full power while driving. Just low idle at 400rpm and has a slight stutter. While exhaust Are you running a new set of A/C delco plugs and are they all firing ? and can it be possible there is an exhaust leak ?

Is the C / K 1500 a full tune up?

Yes full tune up not sure on the firing but there is no hesitate on driving it. Full power before this low idle it wad loping and stalling that’s when I dropped money and replaced every sensor and redid igniton timing now just a really low idle

A few months ago I started noticing a problem every once in a while when putting the truck in reverse in a parking lot to back out of a spot, it sometimes would stall out if I didn’t hit the gas quick enough after shifting into reverse. When this happened I could put the truck in park and it would immediately fire back up and seemed fine.

https://www.youtube.com/watch?v=0MZSXoCXwDQ

My 90 would not start if the vacuum line to the MAP sensor was disconnected. The MAP is located behind the TBI. Be sure the vacuum hose is in good shape. Mine has to be replaced as the glue no longer worked and it leaked. If you have a vacuum pump, make sure the MAP can hold a vacuum or it needs to be replaced.

OK, so I bought a 1990 Chevy Silverado with a 5.7L (350) TBI off Craigslist. I knew I’d have to do a lot to get it into shape, but now its kicking my behind.

Is the ignition module on my 90 k1500 bad?

A few months ago, I have an ignition module go bad on my 90 K1500. Even though the ignition module was bad, the injectors were spraying fuel. There is no service port on the TBI fuel lines so you need a special tool to check the fuel pressure.

Why does my 350 engine die while driving?

Supposedly a different 350 engine and transmission was put in a couple years ago. This problem has been going on for 2 weeks. I’ll start the car up and it runs just fine, no problems. After driving for about 20 minutes, the engine will die while driving, and will not start back up until the next day.

TPS code 22 low voltage 3. MAP code 34 low voltage. 4. IAC valve stuck. 5. timing is off. problems fixed so far. 1.

Why does my C / K 1500 have no power?

I have a ’97 k1500 with a 350 and 4l60e automatic. Assuming all things are OK with the truck, would a bad fuel pressure regulator cause it to have no power at low rpm’s?

The 7.4-liter V8 engine was revised, and could be mated to a 4-speed automatic instead of the prior 3-speed. In the 454 SS, that engine now made 255 horsepower–25 more than in 1990. 1992 C/K Pickup. Sportside trucks with the flare-fendered cargo box could have an extended cab this year.

Re: The 4×4 do not engage on my 1990 chevy pick up what… On the full size, the front actuator is electric, not vacuum. When in 4wd mode, a switch on top of the transfer case conducts 12 volts out to the actuator. Wire #50 (brown) is the 12v feed, and it conducts to the light blue wire (#900) to the actuator.

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.

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.

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Ruth Doyle