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2001 AC Question

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Old Sep 26, 2017 | 07:00 PM
  #1  
lockman's Avatar
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Angry 2001 AC Question

Compressor stopped engaging. When pressing on relay, it Engages. Blows Cold but is being overridden ( Not Correct ) .... Question is : what is not telling relay to cycle it on & Off ? ( I replaced the low side pressure switch, no Fix !)

Thanks for any advice ( I replaced the entire system last summer . Worked fine until Yesterday ? )

Last edited by lockman; Sep 27, 2017 at 04:58 AM.
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Old Sep 27, 2017 | 07:23 AM
  #2  
Motojunky's Avatar
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From: Maryland
Year: 1999
Model: Cherokee
Engine: 4.0
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Originally Posted by lockman
Compressor stopped engaging. When pressing on relay, it Engages. Blows Cold but is being overridden ( Not Correct ) .... Question is : what is not telling relay to cycle it on & Off ? ( I replaced the low side pressure switch, no Fix !)

Thanks for any advice ( I replaced the entire system last summer . Worked fine until Yesterday ? )
Silly question, but did you put a gauge on the system to check pressure? Maybe the pressure switch is doing it's job?
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Old Sep 27, 2017 | 07:44 AM
  #3  
investinwaffles's Avatar
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From: Tarpon Springs, FL / Denver, CO
Year: '98
Engine: 4.0 I6
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Have you jumpered the low-side pressure switch to see if the compressor stays clicked on?

If it does, then you have low refrigerant pressure. If there is no change (clicks off like it currently does), I would assume either the relay is bad or the fuse-box contacts may be bad?
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