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MY A/C MAKES A REALLY LOUD SQUEELING/CHIRPING NOISE WHENEVER ITS ON WHAT COULD BE THE PROBLEM?

  • Tiny
  • dhulse96
  • 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
  • 25,556 posts

Loose belt or the compressor is locking up.

Roy

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Wednesday, February 8th, 2012 AT 5:57 PM
  • Tiny
  • KHLow2008
  • Expert
  • 41,994 posts

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
  • 41,994 posts

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
  • 41,994 posts

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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