Thread: High idle
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Old 05-15-2024   #8
Mystic ZR-1
 
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Join Date: Jan 2010
Location: Mystic CT
Posts: 2,631
Default Re: High idle

Quote:
Originally Posted by Young1 View Post
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
I do that every couple of driving seasons, never had an idling problem.
You'd be suprised how much stuff is on it.
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