2005-2014 Mustangs Discussions on the latest S197 model Mustangs from Ford.

Random on and off A/C

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Old Jul 16, 2017 | 08:14 PM
  #11  
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SimplyMarkB
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From: Fl
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Update.. so far I have replaced the blower motor relay and the low pressure cut off switch. Charged the system with fresh refrigerant, the pressure looks great but when I turn on my AC, nothing.. no motor. The compressor doesn't even kick on. This is dangerous in Florida, not only because of the smothering humidity and heat but when we have daily downpours (hurricane season) I can't roll down my windows and the front windshield fogs up like crazy and I have to pull over for safety sake. Not sure what my next step would be. I have to do some research.
Old Jul 19, 2017 | 11:07 AM
  #12  
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flash_xx
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Have you had work done on the dash, like the radio and such? It might be as simple as the a/c control panel disconnected or damaged
Old Jul 19, 2017 | 01:54 PM
  #13  
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Default Actually someone did!!

I had a new stereo installed and when I think about it, it was around that time that my A/C started cutting in and out.. Maybe it is the control. Good call. I'll check it out.
Old Jul 24, 2017 | 04:14 PM
  #14  
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SOLVED... it was the relay! I am glad I replaced the blower, however. The airflow is much better also!
Old May 21, 2019 | 01:42 PM
  #15  
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Default Same issue

Mark could you tell me what relay you replaced and the location.I have the same thing happening to me on hotter days no ac and cool morning works better.
Old May 24, 2019 | 06:54 PM
  #16  
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SimplyMarkB
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Yeah.. unfortunately, I thought I had fixed it but that wasn't the issue. I never was able to get it fixed. I became one of those, I'll get around to it when I have time and my work demands became so high it never happened. Sorry.
Old May 25, 2019 | 08:25 AM
  #17  
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Dino Dino Bambino
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Maybe this will help you fix your AC:

Old May 29, 2019 | 02:23 PM
  #18  
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Default I hear you on that

Yeah I’m in that same situation now no time for play. Water got inside the blower on mine and totally took the blower out. I replaced the blower thinking it was going to be good as new but nope, now this isssue popped up. I was also wondering if you ever replaced the blower resistor on yours?
Old May 30, 2019 | 08:32 AM
  #19  
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SimplyMarkB
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Originally Posted by Dino Dino Bambino
Maybe this will help you fix your AC:

Bahahahahahahahaa!!!!!
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