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2008 XC70 Air-conditioning compressor noise

Help, Advice, Owners' Discussion and DIY Tutorials on the third generation Volvo V70 wagon and XC70 crossover, and second generation S80. Are you an owner? Prospective owner? Get in here and join us! Start a new topic or comment on an existing thread.

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rollingon
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rollingon

2008 XC70 Air-conditioning compressor noise

Post by rollingon » Mon Sep 29, 2014 4:19 pm

Hello. There is a noise in my 2008 XC70, that has been getting steadily more obvious, that appears to be coming from the air-conditioning compressor. My initial fear was that the noise was coming from the transmission, as it sounds like a whine that increases and desreases with engine revs, however, I realised that it stopped when I turned the A/C off. It isn't the fan as the noise doesn't happen when the fan is running without the A/C.

Does anyone know why the A/C in the car would be making this noise? Due to the change in pitch with revs, and therefore the pulley/belt, my sense is that it is coming from the compressor. Does this seem right, and why would it be happening? Is it possible that the compressor simply needs to be recharged, or am I looking at having to replace it.

Any input and suggestions welcome.

Thank you.



2008XC70
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Re: 2008 XC70 Air-conditioning compressor noise

Post by 2008XC70 » Mon Dec 22, 2014 5:00 pm

Did you ever get this fixed? Mine has started making a noise too. It almost sounds like the same noise that a power steering pump makes when its low on fluid.

Could be a clutch issue? Or low lubricant in the pump?



2008XC70
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Re: 2008 XC70 Air-conditioning compressor noise

Post by 2008XC70 » Mon Dec 22, 2014 5:04 pm

Someone made a video, mine sounds similar but not nearly as bad.




bobjet
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Re: 2008 XC70 Air-conditioning compressor noise

Post by bobjet » Wed Jan 17, 2018 10:19 am

I've got a similar issue with the same car. I'd love to hear that I could just replace the AC clutch and bearing. What did you all do to fix the issue? I'm about to replace the serpentine belt so I'm formulating my "plan" to solve all this as economically as possible while replacing all the recommended do dads. There's a guide here in the forum that I plan to follow that is just stellar.



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pierremcalpine
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Re: 2008 XC70 Air-conditioning compressor noise

Post by pierremcalpine » Fri Jan 19, 2018 5:41 am

When I did my serpentine belt I asked the dealer whether I should do any other work while I was in there. They suggested doing the ac clutch as they had seen these fail in and around 180-200k km’s. they said that they fail and when they do they take the compressor out too. Based on their advice I did replace the clutch.

I would be inclined to start with the clutch and see where you land. You will have to do that anyway. If you have caught the issue in time you are all good. If not time for a new compressor.

Not sure if this helps you. Good luck keep us posted.



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