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Re: '91 S-10 High Idle
also remove and clean the IAC valve in the side of the TBI unit, commonly is all carboned up and it controls idle speed
just unscrew it from the unit and use carb cleaner real godo on it and also in the hole in the tbi unit it comes out of and then compress air blow it all out good
lots of black crud in there, get it out
if its really bad then you should remove the unit and do it from underneath too
good luck
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I also am user fastr68 here- Randy
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