1989 Pontiac Trans Am GTA Fuel Injection Tuning - 101 Tech Idle Mischief
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We brought our IAC valve into spec by gently pushing on it until it was slightly less than 111/48 inch from the base of the threads to the tip of the cone. Tip: Installing the IAC valve when it is extended beyond that measurement can cause damage; when installed too short, it will be outside the computer's adjustment range. View Related Article
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