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What is the replacement interval for this valve?
I have 57K on my 1999 and I am thinking its time. When I come to a stop and put it in park the idle is a bit high (1100-1200) before it settles back to about 800-900.
Anyone else have fluctuations at idle when in park?
There is really no replacement interval. It is a replace as needed part. You could try cleaning it...and reinstall. However, for the price of a new one(low cost)...and the time to change...I would recommend just replacement.
Take a look at my gallery. I have pictures of the removal/install directions...and the IAC part # needed from FORD.