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a/c compressor noise

redsoxwin100 on Tue September 23, 2014 6:27 PM User is offline

Year: 2003
Make: honda
Model: civic

I have an engine whining noise that i've
narrowed down to the a/c compressor.
I gets louder and faster when i accelerate.
It goes away when the a/c (clutch) is engaged.

any thoughts?



mk378 on Tue September 23, 2014 8:24 PM User is offline

Noise gets LESS when the compressor is engaged? That might be the idler pulley. Take the belt off and spin the compressor and idler by hand. They should be quiet and not wobble.

redsoxwin100 on Wed September 24, 2014 1:35 AM User is offline

actually the noise completely goes away when air is on (clutch engaged).
Midas replaced the whole compressor 4 months ago (remanufactured)---
but the car transferred owners so they won't honor the complete warrantee.
They will replace the compressor but will charge labor/ and R & R (450.00)
I'm triing to narrow the noise to the clutch/pulley which i should be able to
fix myself for less. I thought it might be a small air gap (almost non-exsistant)
but the noise was there with the clutch plate off. Again.....purrs tike a kitten when engaged.

thanks for any thoughts

bohica2xo on Wed September 24, 2014 11:50 PM User is offline

Midas - your gold in their pocket. Muffler monkeys...

Pull the belt off. Check every part it touches. Alternator, idlers, pumps. Spin each one by hand, feeling for bumpy bearings. Rock each idler to see if they tip. The compressor idler bearing may be making the noise, or a $15 idler nearby may be the culprit.


"Among the many misdeeds of the British rule in India, history will look upon the act of depriving a whole nation of arms, as the blackest."
~ Mahatma Gandhi, Gandhi, An Autobiography, M. K. Gandhi, page 446.

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