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01/07/2008, 7:28PM
my monte carlo is idling high ? I changed the idle air control valve but did not help? What else could it be?

01/07/2008, 11:43PM

try changing throtle position sencer, and tempeture control sensor.

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01/08/2008, 5:56PM

Yes, the PCM may not be detecting when the engine is warm enough to switch to "warm" operation, and if it's staying in closed loop mode, it's using a preprogrammed higher idle and fuel mixture to make the engine run.  See if there are any stored check engine codes as well.

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01/08/2008, 9:24PM

Papa's spot on here, blatantly the the throttle sensor.

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