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Message: <blockquote data-quote="clayton" data-source="post: 1589544" data-attributes="member: 31409"><p>So I replaced the ignition control module with a Motorcraft replacement and the problem is solved.  But, it created a new issue. The car starts perfect and idles fantastic. But when I drive it, I get a horrible idle hang at 1300 rpm. After driving it, anytime after I shift or if im sitting at a red light it hangs at 1300. I had this issue before and I resolved it with a IAC restrictor plate, reset base idle and set TPS to .98V. Now with the new ICM the idle hang is back. I have no more idle surge, it doesnt want to stall out anymore and im not breaking up at agressive RPM, but the rpm hanging is back. Im not understanding why and I dont want to reset my idle because it starts and idles perfect....until you drive it. For instance I just got home from work. When I started the car at my job it fired right up and idles as smooth as cream at 900rpm ( which is where i set it due to the cam). Driving home i got caught at 2 red lights, both of which when I took it out of gear it idles at 1300. I pulled in my driveway and didnt even have to touch the gas to pull into the garage because of the high idle, and once parked, it still sat at 1300. I shut it off and re started it and instantly its idling back down at 900....until I actually drive it again. Im very confused. Ill fix one issue and open a new one, back and forth...</p></blockquote><p></p>