Quote:
Originally Posted by 9-5aero22
the iac is usually on the throttle body...it usually has at least one coolant line going to it and most of the time, some sort of electrical connector as well...iac is short for idle air control valve and i wouldnt be surprised if that was your problem...i think it can also be called an idle speed control or something of that nature...
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Not always though. It can also be just a plain motor that will allow a certain amount of air to bypass the throttle body on idle. It will adjust the idle per the ECU which receives a signal from the coolant temp sensor so it knows the engines temperature and how to set the idle.