Can someone give me idea on why my idle is screwy. I noticed that it started last week after driving the interstate back and forth from work I have a 91 kick 1.6 8v 5 sp. 2 door. Most days it drives fine with the idle @ 800 rpm. Then off and on thruout the week it will idle 1200rpms. I have replaced many parts within the last 2 yrs. EGI, TPS, MAP, Batt, Alt, Timing Belt, Fuel Pump, Fuel Regulator. Ran fine after replacing all these parts.