as of this morning my evo 9 decided to act up. Between shifts under 4k rpms my revs hand and almost dont drop and when i put it into the next gear it will jump. When i shift at 4k+ rpms it is fine however. I was told its my IAC but i have no idea. Has anyone ever dealt with this?

 

Hard to tell what your car is doing, based on your description.

 

Pretty much if i go to shift at say 3.5k and itll hold that rpm and very very slowly drop down making it tough to shift

 

Ah. Throttle hang. It just started doing it recently, for no reason? You haven't changed anything on the car?

 

havent changed a thing on it in months it just hangs up there. I drove to get breakfast and it was fine then when i left the deli it started