Noisy A/C Compressor

Aug 05, 2006 4 Replies
M

I have a 94 Nissan Sentra. Right now my radiator and A/C fan do not work but as long as the car is in motion, everything is getting cooled OK. During normal operation, when the compressor kicks on, it makes a squealing sound for a second and then stops. During that time, the air coming out of the vents gets warmer and then cools right down again. Also, when I have the hood open and the A/C is on, the compressor kind of makes a knocking sound.



Both fans run off of a single relay, and the fuses and relay have been tested good. Any ideas on both / either issue would be much appreciated.



Thanks in advance.



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A

The noisy compressor could be due to lack of oil or to the system pressures and condition.

The squeal could be the drive belt slipping.

Good luck

mn9876 wrote:

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M

I checked out my belts and I definately need to replace all three. Any ideas about the fans? I haven't checked the diagnostic codes from the computer yet, so that will probably be my next step.

Thanks

AS wrote:

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