My A/C makes a really loud squeeling/chirping noise whenever its on what could be the problem?

Tiny
DHULSE96
  • MEMBER
  • 1999 NISSAN SENTRA
  • 142,670 MILES
It doesn't go away until I hit high speeds or turn off the a/c but as soon as I slow down or turn the a/c back on I starts back again

I've already replaced the bearings
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Wednesday, February 8th, 2012 AT 5:49 PM

6 Replies

Tiny
ASEMASTER6371
  • EXPERT
Loose belt or the compressor is locking up.

Roy
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Wednesday, February 8th, 2012 AT 5:57 PM
Tiny
KHLOW2008
  • EXPERT
If the belt is not loose or the compressor good, check for a bad harmonic damper on the crank pulley.
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Wednesday, February 8th, 2012 AT 9:58 PM
Tiny
DHULSE96
  • MEMBER
My mechanic said it might be the compresser, is tht something I need to fix right away, and can I still try to ride with the a/c?
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Friday, February 10th, 2012 AT 3:47 AM
Tiny
KHLOW2008
  • EXPERT
If it is the compressor, you can drive but avoid using the A/C to prevent any unwarranted damages if the compressor were to give way.
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Friday, February 10th, 2012 AT 12:55 PM
Tiny
DHULSE96
  • MEMBER
What if it makes a low squeeling noise even when the a/c is off and hasn't been turned on yet
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Thursday, February 16th, 2012 AT 3:31 PM
Tiny
KHLOW2008
  • EXPERT
Then you would need to check the other drive belts. It could be the alternator belt or as I mentioned in previous post, a bad harmonic damper.
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Thursday, February 16th, 2012 AT 5:51 PM

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