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Recent content by pontiacGTP1999

  1. pontiacGTP1999

    cylinder #3 misfiring

    I have a 1999 grandprix gtp 3800 supercharged, it recently developed a REALLY bad miss and i can hardly get it outta my driveway. the check engine lite can on so i had it put on a computer that checks the codes (not sure what codes came up) but it said that theres a misfire on cylinder #3. does...
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