Question about 2000 Pontiac Grand Prix

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My 2000 grand prix slows down when I put the gas petal to the floor. We just changed the catalytic converter and it still does it

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  • mslisam1 Apr 25, 2010

    There is but it reads an O2 sensor (which is expected after putting on an after market converter)

  • stepmckirgan May 11, 2010

    is there a check engine light on?

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L'm assuming the air filter and fuel filter was done,you could try a bottle of fuel injector cleaner in a tank less than half full, then getter on the highway and punch it(with in reason) good 1/2 hr trip at least.

Posted on Apr 25, 2010

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