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2001 Pontiac Grand Prix Question: Check Engine light just suddenly went off suddenly while driving, whats it mean?

 

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khassankh, Charlotte, NC, February 13, 2012, 07:34
 Rookie

It was on for a month or so and i was told it was probably a piston misfire and i needed to change the catalytic converter, so will it comeback on or just stay off till somthing else is wrong?

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  • Answer #1

    SCHULZ February 13, 2012, 14:32
     Enthusiast

    your car takes test on the whole vehicle at differnt times the light probably went off because what was making the light come on (failed test) must have passed the last test... it will most commonly come back on soon

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