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post #1 of 6 Old 05-19-2017, 08:54 PM Thread Starter
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Call A/C experts

Working on a 2001 mustang GT. 2 weeks ago I had turned the AC on and it was fine. Went to get on it a little to WOT and then it quit working. AC clutch is not kicking on. Jumped the 2 wire low pressure switch at the accumulator and nothing but had 12 volts at the pigtail. Then jumped the 4 wire switch at the high pressure switch by the radiator and nothing but had 12 volts. Then I unplugged the 2 wire clutch cycling switch at the compressor and jumped it and had ice cold air and 12 volts at the pigtail. Is the AC clutch bad?? Can you get that switch or have to buy a whole compressor?


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post #2 of 6 Old 05-27-2017, 10:28 AM
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did you have 12volts at the compressor clutch plug???


89 GT gr-40, KB2200(10psi), tweecer R/T,LC-1, 22gal cell, w/tailpipes.
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post #3 of 6 Old 06-10-2017, 12:30 AM Thread Starter
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Checked today and I'm not getting 12 volts out. I'm assuming CCRM. Wiring looks good and ground is good


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post #4 of 6 Old 06-10-2017, 09:16 AM
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do you have the wiring diagram for a/c control?

89 GT gr-40, KB2200(10psi), tweecer R/T,LC-1, 22gal cell, w/tailpipes.
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post #5 of 6 Old 06-10-2017, 10:14 AM Thread Starter
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I have a couple I've found off google that I've been using.


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post #6 of 6 Old 06-10-2017, 01:47 PM
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put one lead on the fuse that feeds the a/c switch on the console

then verify to ground with other lead

now leave the lead on the fuse, and with the other lead, probe at each connection till you find the open.

89 GT gr-40, KB2200(10psi), tweecer R/T,LC-1, 22gal cell, w/tailpipes.
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