Question about 2002 Chevrolet Cavalier Coupe

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2002 cavalier that is misfiring. i replaced the plugs, coil pack and ignition module. is there something im missing?

This car ran superb, then one morning the engine light came on, started flashing, running crappy. a mechanic told me the flashing was misfiring. someone please help, if i cant fix it im riding my suzuki all winter...bbbbrrrr!!!

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  • Joshua Morse
    Joshua Morse Oct 31, 2012

    this car runs and will start right up. but its miss firing something aweful

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  • Contributor
  • 25 Answers

It may be a vacum leak as far as the engine light a lot of auto parts houses will check the codes for free (like auto zone)

Posted on Oct 31, 2012

  • 2 more comments 
  • Joshua Morse
    Joshua Morse Oct 31, 2012

    yeah i know, but i cant drive it. i was told if i drive it running like that and its the timing, i could damage the engine

  • Marc Stewart Oct 31, 2012

    is it popping out of the air cleaner?or is it like chugging

  • Joshua Morse
    Joshua Morse Nov 08, 2012

    chugging and engine shakes

  • Marc Stewart Nov 08, 2012

    have you done a compession check and also is it going through anti freeze and has it ever gotton hot

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Check for a vaccum leak at the intake. Frankster016

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ignition mod. grounds,pcm or timing belt could all be it but, I would have to look at timing first.

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SOURCE: Running rough check engine light on

cylinder 5 has a dirty or sticking injector. check pvc and egr valve.

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SOURCE: Chevy Blazer P0303 and P0420

Most probably and if a cat is not flowing proper is causes back preasure that can result in sticking or burned vavles,mechanic not nice by saying ignore the cat effiency code p0420.Can ussually have cat replaced at aftermarket muffler shop for approx. $200 cheaper than valve job or excessive fuel that you have used and damage that may occur to your engine.

Posted on Jun 16, 2009

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