Question about 1999 Pontiac Grand Prix

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Skipping I was sitting at a traffic light when al of a sudden my Gran Prix just started missing. I still have plenty of power and at medium speeds you can hardly tell but when your at idle its really noticeable. Help

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  • rsr205 Jan 21, 2009

    Is there anything else I can try? That did not work....

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Other problem could be the the fact that your fuel pressure is dropping , insufficent fuel presure from your fuel pump to injectors will cause a missfire condition .. Solution : Replace in Tank Fuel Pump .. Hope this Helps possible cause ...

Posted on Feb 13, 2009

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Check your Air Filter and the Seal on your Gas Cap. If the Gas Cap Seal is Old it will allow Air to enter the Fuel tank and cause your Miss.

Posted on Jan 21, 2009

  • Travis Humphries
    Travis Humphries Jan 21, 2009

    you could check the Fuel Filter for a Small Blockage. Could cause the Same Problem Intermitantly

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