Quote:
Originally Posted by Young1
Quote from service manual
Incorrect minimum idle speed may be caused by foreign material accumulation in the throttle, bore caulking, on the throttle valve, or on the throttle shaft.
Also a little research indicates to remove the IAC idle air control on the passenger side of the Plenum. It?s round with two small flanges, remove it, clean it and clean the passages in the plenum.
Hope this helps for your high miler
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This is what my mechanic suggested and it sounds perfect. I'll get some throttle body cleaner before I take it apart.