Question about 2002 Jeep Grand Cherokee

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Cherokee ac blower fuse

When I change out the A/c Fuse, the A/c will blow really cold for around three minutes before blowing the fuse again. I have been told that it may be the electric fan motor (car does not run hot), or the compressor. Any ideas???

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  • Matt Apr 30, 2013

    My heat still works fine. Before my a/c completely stopped working, it would stop blowing if the motor was turning higer rpms when going up a hill or accelerating but resume working when the rpms went lower.

  • Matt May 07, 2013

    Thanks, I took it to a trusted mechanic and he is certain that the compressor clutch needs to be replaced.



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Its not the fan motor. That would blow a different fuse. IT could be the compressor clutch that is shorting out.

Posted on Apr 30, 2013

Testimonial: "Thank you!"

  • Brad Brown Apr 30, 2013

    If you are saying that you can run the heater fan without the A/C for extended periods and not blow the fuse, with the problem that you are describing it sounds to me like the A/C system is having a problem with the high side pressure. When you are running at high RPM and the A/C quits, it is because there is too much pressure building up in the system. The high side switch kicks the compressor out and it quits making cold air. When the pressure drops it tries to kick the compressor back on and it blows the fuse because either the high side switch is bad or the compressor has a bad clutch.

  • Matt May 07, 2013

    Thank you for your help!



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Probably a shorting out directional lamp socket. May be the intermittent problem you're having. It's like taking a kid to the doctor's...They always get better before actually SEEING the doc...If one of the directional housing seals are bad, it may have allowed the socket to corrode enough to ground to power. Check the fronts first.

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it might not be that. check your headlamp relay. i know sounds weird but just do it. when i bought mine it had already been replaced with the wrong one so it kept blowing it and the radio. replaced with stock part and just like that no more problems. hope it helps

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SOURCE: 98 grand cherokee asd relay blowing fuse

The fuse it doing it's job, you have a short ( Wire that is connected to a ground, that draws too much power )

If you have an electrical schematic ( Repair manual ) find out which wires are connected to that fuse and check them for any chaffing, cuts, unnesassary twists, or corrosion.

If you have a ohm-meter, isolate the system ( by disconnecting the fuse, and other connections. Then check for any resistance on wires that should not be connected ( because you disconnected them ) by having one Lead on the wire's connector and the other meter-lead on your car's frame. A good wire will not have continuity if it is isolated.

Posted on Apr 10, 2010

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