December 22, 201114 yr Author A better IAC is what fixed the issue. The Sensor inside the IAC which reads water temp failed and was giving inaccurate readings. $20 IAC fixed the issue which has gone on for 6 months. Cleaning an IAC is a waste of time for the most part I have found, if you have it off, replace it with a better lower milage part.
December 22, 201114 yr A better IAC is what fixed the issue. The Sensor inside the IAC which reads water temp failed and was giving inaccurate readings. $20 IAC fixed the issue which has gone on for 6 months. Cleaning an IAC is a waste of time for the most part I have found, if you have it off, replace it with a better lower milage part. Sorry Sport, but I gotta disagree with you. There is no "Sensor inside the IAC which reads water temp." The ECTS, which sends temp info to the ECU, is near the IACV but not part of it. Glad that $20 IAC solved your problem but most of the time a thorough cleaning of the car's existing IACV works just fine (and it's cheaper!)
December 22, 201114 yr Author What is the purpose of the coolant lines running in and out of the IAC then? I understand the CTS on the crossover sends (Most) if not all data to the ECU.
December 22, 201114 yr What is the purpose of the coolant lines running in and out of the IAC then? To cool--or moderate--the temperature of the IAC body. Same thing coolant does in the rest of the engine.
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