1993 940 turbo. Facing erratic air con compressor not cycle hence no cool ari although the blower fan is running. Change compressor about 3 months ago and the air con is giving mist... never encountered prior to the changing of compressor. Now at times air con compressor not cycling. Based on advice: change pressotat; refill gas and resolder the control unit relay. Problems still exist. What else should I fix?? Air con compressor not cycling/no cool air happens once in a while like once in 3 to 4 days. If you stop the car for between 10 to 45 mins, the compressor will start cycling again. Reaaly lost.
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