I have a '89 LeBaron ( H body ) T1 with a high idle problem. Sometimes I have a high idle of 2200 RPM or so and other times car idles perfect. Have checked out vacumn lines with propane and thought i found a bad vacumn line off one of the ports of the throttle body and I replaced it. No codes are found. I shot fuel injection cleaner through the throttle body but the high idle returned. Would a bad or out of range AIS solenoid cause this ?
Maybe the Mopar Performance computer doesn't show a bad AIS ?


Jim