LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Fans running all the time, AC stopped working?

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Old Sep 1, 2007 | 08:24 PM
  #1  
RyanD's Avatar
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Fans running all the time, AC stopped working?

My fans are always running and my AC stopped working around the same time? Any recommendations?
Old Sep 1, 2007 | 10:41 PM
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Look to see if the SES is on. If so, the fans will normally be on, too. Flash the code and see what it is.
Old Sep 2, 2007 | 09:47 AM
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I flashed the codes, and all I got was 12 over and over. So it's not throwing a code.
Old Sep 2, 2007 | 09:51 AM
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your freon must have leaked out. mine did this too. i had no freon, and my pressure switch was bad.
Old Sep 2, 2007 | 09:59 AM
  #5  
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Will a bad pressure switch make the fans run the whole time even with the A/C off? Edit: yes it will

Now how do I fix it without fixing the A/C right away? (without programming it out) Any ideas?

Last edited by RyanD; Sep 2, 2007 at 11:03 AM.
Old Sep 2, 2007 | 01:34 PM
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According the to factory manual, the a/c pressure switch does not cause a SES light, so I would think the fans should not come on because of it.
Old Sep 2, 2007 | 01:56 PM
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Well, I could always replace my cut a/c hose and see if it helps. How do I go about replacing the hose that runs right next to the alernator? It has some type of crimp connectors on the end that connect to the hardline and I'm not so sure about them?
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