Question about 1997 Pontiac Sunfire

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Engine rmps will not back down

When engine starts it stays high idle, it wont back down. 1996 pontiac sunfire 2.4 over head cam

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  • lonnie1938 Feb 02, 2009

    engine rpms max out, to fast to put into gear

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If this happened all of a sudden, It sounds like a Vacuum leak. I would inspect the vacuum hoses for brakes or cracks. Is the Rpm too high to test drive and see how the vehicle is running?

Posted on Feb 02, 2009

  • Mike Gagnon
    Mike Gagnon Feb 02, 2009

    Have you checked throttle cable return. Might have caught and is holding wide open.

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