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IDLE AIR CONTROL OVER SPEED ERROR. on 2001 Ford Escort

the canobd2 diagnostic tool gives a reading P1506.

Asked by for the 2001 Ford Escort
First, remove IAC and clean out all carbon and reinstall. Also, look for weak, collasped, broken or poorly seated vacuum lines. Lastly, replace PCV valve with a new one, it is probably due. Hope this helps you.