- Dec 25, 2017
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was having issues with my aic valve. cleaned it per you tube. it worked fine for 3 months, then failed again. got a new one (advance auto). problem did not go away. in addition to cold idle issue, throttle does not return to idle when shifting. 5-6 second lag. are aftermarket iac valves that unreliable and should i go motorcraft. i never had the throttle lag with the old unit, only the replacement. thanks for any ideas