In a 2002 jeep grand Cherokee limited what would cause the ac to cut on and off for a couple days and then cut off for good?

Answer 1

The compressor will "cycle" on and off if the refrigerant level is getting low. There is a sensor that detects the pressure of the refrigerant on the "low" side. If there is enough pressure, the compressor can turn on. When the compressor pulls some of the refrigerant and compresses it to the "high" side, there will be less refrigerant for the low side, which causes the sensor to turn the compressor off again, then the refrigerant migrates back to the low side and the compressor can cycle back on. Once the refrigerant level gets so low that the sensor won't allow it to turn on, you're done. You need to find the leak, repair it and recharge the system. Most AC systems that leak that fast have a worn seal and/or main shaft bearing in the compressor. You can't really repair a compressor so if that's your problem, just plan on getting a new one. Look at the compressor, around the pulley. If you see oil, that's your leak.