ok i have an itr swap in 94 eg hatch recently i've tried to get my a/c going so i put refrigerant and a new belt, but when putting the refrigerant in i may have over filled it and was bogging the engine down pretty good when the compressor was trying to shut off, so i let some refrigerant out so it doesn't bog. Then I start driving for a little while with the a/c off and i notice my idle is low where my tach wouldn't read, then i look at my vafc and it's reading like 1.5% on throttle percentage and idles at around 4k or 5k rpms so i cut the belt and the same thing happens. Right know its running fine but when i go to turn the heater or a/c on this problem occurs again and right at start up when this problem occurs it idles really low and reads thr% after driving for a little while the problem will go away and my questions is if anybody knows what sensor could be causing this problem its kinda bothering me and i'm going to be selling my car very soon. THANKS