Home › Forums › Stay Dirty Lounge › Service and Repair Questions Answered Here › Belt Slipping Off AC Pulley – 97 Mitsubishi Eclipse RS › Reply To: Belt Slipping Off AC Pulley – 97 Mitsubishi Eclipse RS March 21, 2020 at 8:44 pm #953471 Richard KirshyParticipant You need to check to see that all the pulleys that spin the AC belt are all in the same plane and remain in the same plane while the engine is running.