Question about 1988 Chevrolet C/K 3500

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Engine will start but will not stay running

Engine will start but not stay running unless I press the accelerator over and over once I stop the engine dies, I have change the fuel filter.

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  • moosedaddyg Jan 11, 2009

    it is fuel injected 454

  • Mike Butler
    Mike Butler May 11, 2010

    That's close to carbureted days, can you please confirm what engine, and whether carbureted or fuel injected?

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I have a 1992 Chevrolet Engine (motor home). Fuel injected.. getting too much gas

Posted on May 08, 2009

5 Suggested Answers

  • 3 Answers

SOURCE: When I start the car, it dies when I press the accelerator

this sounds like a mass air flow sensor problem. they make a cleaner for the m.a.f. try that first and see if your problem goes away. if not you might have to replace the m.a.f.

Posted on Dec 22, 2008

  • 4 Answers

SOURCE: car dies when stopping or slowing down, hesitates on acceleration

check for a vacuum leak,you could possibly hear a whistle under the hood,or you can spray starter fluid near the intake manifold where the suspect leak could be and if the engine accelerates it has an vacuum leak,try the simple things first,can also be a clogged PCV valve,it is in the valve cover somewhere and it will have a rather large rubber hose going to the intake manifold

Posted on Jan 11, 2009

  • 4044 Answers

SOURCE: 94 chevy k1500 5.7L engine won't run properly.

It could and most likely is a faulty Fuel pump.

Posted on Sep 12, 2009

  • 73 Answers

SOURCE: My 99 ford explorer cuts out and dies when accelerating in drive

You may have dirty or clogged fuel injectors, may also be problems with the ignition system. Might also check the fuel pressure to make sure the fuel pump is working correctly.

Posted on Mar 28, 2010

ginko
  • 19396 Answers

SOURCE: 2001 Isuzu Rodeo 54248 miles

Hi.

If problem is only on startup and when idleing, then the problem is likely IAC system, also a vacuum leak will cause the same problem.

If problem is not only on startup and idle, but also when driving, then MAP sensor and EGR system must be checked.

Check also accelerator cable state and setting.


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The first thing to do is pulling out the OBDII fault codes stored in the ECM. This is done connecting a code reader to the ECM diagnostic port. The job can be done for a small fee at any local garage, and it is done for free at AutoZone.

The codes will help locating the problem.

About possible faults:

Problem is stalling when idling and during startup, but engine idling fast all the time. Problem not starting at times it is due to the fact that the wrong mixture is being sprayed, this is probably causing flooding and misfire. Since the CEL is on, one of the codes returned is probably misfire.

Check accelerator.

Check IAC system. This is composed by a valve and a solenoid that check and control amount of extra air air when the engine is idling. The IAC valve is located on top of the throttle body.

Check the vacuum system and try cranking with gas tank cap off. Vacuum system is tested using an hand tool gauge onvacuum lines while spraying card cleaner on the hoses (or heating them with a torch). If there is a leak, pressure will go up. A big leak will also do hissing noise, and will often result in a lean code when doing an OBD code scanning.

This kind of symptoms can also be caused by weak wiring to MAP/MAF sensor (MAP in this engine).

If the car also drives very rough and is revving up and down in a weird way, check the EGR valve.

As first thing I would do a code scanning. This car is OBDII. The scan can be done for free at the nearest Autozone, or for a small fee at any garage.

If you get any OBDII code from the scan, report it here, so that we can individuate the possible reason for the problem.

If you repute my solution helpful, then please take some times to accept the solution. Providing good repair tips requires time and skills, and your feedback is important for us.

Regards.

Ginko.

Posted on Oct 26, 2010

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