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Re: Shouldn't IAC counts increase when a car is put in gear?
Posted to Technical Theory Forum on 6/26/2018

It sounds like it idles at 650 in neutral/park. What is the specified idle speed? If there is an idle-correction PID, what does it read?

If there is only one input to the ECU for shifter position [Perhaps it indicates "Neutral" whether the shifter is in P or... Login to read more.