Question about 2000 Jeep Grand Cherokee

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2000 Jeep Cherokee Air Conditioner

My air-conditioner stopped blowing cold. I recharged it with R134. It worked great for one day, then quit blowing cold again. Could it be the low-pressure cycling switch?

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  • khoward3000 Jul 28, 2008

    My A/C stopped blowing cold, started blowing barely cool and one side of the Jeep's vents (passenger side) is now barely blowing (hot air). I got the A/C recharged and it lasted a few days. Now I'm back in the same situation.

  • Kubira Jul 31, 2008

    First my heater went out (it wouldnt throw hot air to passenger only cold air) during winter time, then in the summer the fan stopped blowing any air into the cabin even on high! Not sure whats going on :( Please help !!!

  • dallas_osbor Aug 07, 2008

    Same with me. A/C quit blowing cold. Now only hot air. I can tell the compressor isn't kicking in. Any ideas?

  • knightnet Aug 08, 2008

    Yes, the compressor will blow for a short amount of time, then blow
    warm air. We had thought it may be the climate control switch, but if
    it is blowing some air then, then it may something els? I will
    check the switch issue to see if it is that.. Greg









  • JEH Cincy Sep 08, 2008

    My compressor is cycling on and off but the recharge only lasts about 3 days. Is there an easy way to find the leak?

  • Anonymous Mar 15, 2014

    Need to recharge my air conditioner on a 2000 Buick regal

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If compressor isn't kicking in, check the connector atop the a/c accumulator, beside the coolant recover tank, in the engine compartment. That connector is atop a black bottle, and the connector goes to the low pressure switch. These switches do fail, and you can jump a wire across the connector terminals to see if the compressor comes on (engine running). As this circuit provides part of the ground path from the compressor clutch, if the switch is open, the compressor will never turn on. If the switch is failed, it can be replaced without opening the a/c system. Just disconnect the connector, unscrew the switch, replace it, and reconnect the connector.

Posted on Aug 08, 2008

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My 99 jeep cherokee is doing something similar, it will stop cooling, it seems like the compressor is still running but perhaps its not, when it stops cooling the low pressure side jumps up to 100 plus psi. i was advised it may be a vacuum problem. please advise

Posted on May 05, 2009

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