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Posted on Jul 15, 2009
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2002 grand am, auto, 3.4 V6, bought used about 6

2002 grand am, auto, 3.4 V6, bought used about 6 months ago. Did run like a dream performance wise, but became progressively sluggish accelerating. Performance of a 4 cyl or less now. Runs quiet and great other then that really???

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  • Mike Butler
    Mike Butler May 11, 2010

    Tried fuel filter replace lately? Have you done anything as in pull plugs & have a look? No check engine light has come on?

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  • Posted on Jul 20, 2009
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Leaky intake or bad injector try unplugging injectors while running 1 at a time replace plug while running to find bad injector good injector changes rpm bad one does not witchever one does not change rpm is the bad injector

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