Question about 1994 Pontiac Grand Prix

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Seems to miss at highway cruising speed

3.1 liter - I have run injector cleaner through it and have tried running a full tank of mid-grade gas. At highway speed (100-110 KPH) in Drive and 3rd there is a repeated hesitation - RPMs about 2000. If I accelerate, it downshifts smoothly and does not hesitate again until I idle down and sit again around 2000 RPM

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  • Anonymous Mar 19, 2014

    rough idle and eng dies

  • Anonymous Mar 23, 2014

    When warm idle goes up and down on its own, revving takes it up and it stays there for more than 10 seconds then drops...while driving at any speed when i take my foot off the gas it jerks a bit, then when i accelerate it jerks again, otherwise it is smooth



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Try changing your fuel filter

Posted on Nov 23, 2008


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Dear anew32, Wed 2-11-2009 3:43am EST (USA)

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