Idling Problem

cyoder

Registered User
Ok guys I have a 1990 SC automatic that is having idling problems. It doesnt happen every time but most of the time when I start the car the car Idles really high goes back down and keeps doing it. If i dont rev the car up myself it dies every time it does it. I have checked all of the vacuum lines, my next thought is the IAC. Should I replace it or start somewhere else? Also, i am only averaging about 16 mpg on a tank of gas and i know that cant be right, I replaced all 6 plugs wires and injectors on the car when I got it and it didnt do anything. Any thoughts of how to get the mpg up?
 
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