A/C Compressor started squeaking...

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cobbcfi

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I tried searching the forums but "no results found" for "A/C" and "AC" yet the was a thread right there that started with A/C!!

So my compressor has a chirp/squeak and I can make it go away when I shut it off. It most certainly does NOT sound like the serpentine belt. It sounds like it may be the pulley making the noise. I have cold air and the pump engages just fine but it just developed this minor (but noticeable) squeak and I am wondering--

What is about to happen??

What can I do?

I know freon has lubricating oil, should I try filling it?

Is there a way to lube the pump/compressor itself?

I am trying to nip this one in the butt before it fails completely...

Thanks again guys

---------- Post added at 07:00 PM ---------- Previous post was at 06:58 PM ----------

Lets not say it was a "chirp" cause that would indicate belt slipping...

It is continuous whirring/squeal but it is minor.. I cannot here it with the windows up, but I do here it with the windows down and when I am outside the truck up to 30ft away..
 

SunlitComet

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ignore your lubricating idea it does not work that way. Ley me ask you this. it happens when compressor is on only. and when it shuts off it stops instantly?

---------- Post added at 08:05 PM ---------- Previous post was at 08:02 PM ----------

also you have a feeler gauge set handy?
 

CJMAC14

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ignore your lubricating idea it does not work that way. Ley me ask you this. it happens when compressor is on only. and when it shuts off it stops instantly?

---------- Post added at 08:05 PM ---------- Previous post was at 08:02 PM ----------

also you have a feeler gauge set handy?


Reviving this thread.

I have the same noise. (2014 GMC Yukon XL SLT, 81k Miles)

Yes, the noise stops immediately when the compressor disengages. Noise only occurs while A/C is on.

No feeler gauge set handy :(.
 

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