hey guys i have a 1996 ranger single cab 2.3l i4 and ive been having an idling issue. when it wamrs up to operating temperature the idle either gets really roguh wen sitting still or really high wen everyday driving. i was told that it was the IAC so ive cleaned it twice and the problem goes away for a while then comes back. i recently replaced it thinking it will sovle it and it still does it -__-. idk wat else to try or check can u help me out?