Question about 1991 Chevrolet Camaro

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My 1991 Camaro

When i give my car gas it acts like its going to die (like its trying to run out of gas but its a full tank) then backfires but it wont die and i need to know what is causing this problem any info will help THANKS!

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  • 91camaro Sep 02, 2008

    yes when it catches again it runs fine

    also when we start it up it starts to bog out and backfire again so he kills it then starts it up again and its good to go no backfiring or bogging out

  • 91camaro Sep 02, 2008

    Thank you for all your help i will let you know how its doing when i get taken care of

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  • Chevrolet Master
  • 5,568 Answers

The backfire is only a symptom and is caused by unburned fuel entering the exhaust system while the engine is misfiring.
When it gets its 'groove' back, the returning spark ignites that fog that has made it into the exhaust system.

You do need to find the source since that backfiring is raising Cain with the catalytic convertor and possibly the muffler too.

Once it 'catches' again, does it seem to accelerate normally?
If not, it could be only a fuel filter that needs replacing.

If you don't have a code reader, it might be a good time to buy one.

The cost is very reasonable at $20 +S&H:

http://www.amazon.com/Equus-3123-GM-Code-Reader/dp/B000EVU8C0

You can pay double if you really want to though-

Posted on Sep 02, 2008

  • Steve Allison
    Steve Allison Sep 02, 2008

    Considering how random the problem is, it would be hard to nail it down but I would probably first pull and replug (several times) every electrical connector under the hood that concerns the engine.

    The contacts are not very good and after a car is a few years old, and if operated in a climate with a variety of weather conditions, corrosion can set in.

    Many of the sensors don't draw any appreciable current so the normal action of current flowing through contacts that can keep them conducting start to fail. The pulling and replugging can wipe them clean and make them conduct again.



    Right now, it sounds like the ECM is losing a signal or is intermittently failing itself.

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