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A sticky is a thread that stays at the top of the page always. Its in that section above all the normal posts. The IAC is the "Idle Air Control Valve." It is located on the front of the plenum. Remove the two 8mm bolts and pull it out (removing the two hoses attacched to it) and then spray whatever looks like it has carbon build up with carb cleaner. Search Google and this forum for more instructions on how to do it. It takes about 15 minutes.