Question about Pontiac Grand Am

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My girlfriend has a 2003 3.4 liter pontiac grand am. sometimes when she turns over the engine, the car will idle very high. it will stay between 1500 and 3000 rpms. she has to hold the brake when she is driving in town, otherwise the car will take off on her. hte problem doesnt happen all the time though. sometimes the car will run and idle fine, other times it will idle at 1500 rpms, and other times it will stay up around 2500 or 3000 rpms, its really weird. i tried cleaning the IAC (idle air control valve), and i also tried replacing it, but neither of these fixed the problem. a friend of mine told me it could be the throttle position sensor, but i dont know if that is in fact the problem or even where the TPS is located. i would really appreciate your insight into what the problem might be and how to fix it.

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Replace the temputer sensor it dont know to choke the motor or not so to speak

Posted on Feb 21, 2011


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