botz66

hello I changed the air idle valve,cleaned the throttle body new temp sensor, stil idle high one in a while ,u shut it off,wait a minute, restart then the idle returns to normal, the O 2 sensor are orginal including the map ,and the tpi. My question could the main computer be bad (no check engine light) getting funkey at times, if so How do I change the computer,or is it one of the orginal sensor .Doing my best not to bring it into the mechanic,otherwise run fine power ect.thanks .