Thread: Whining AC
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Old Oct 30th, 2023, 15:39   #2
Kev0607
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Location: Manchester
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Quote:
Originally Posted by GrahamBrown1 View Post
My S80 has suffered noisy AC for a while. It has always whined a little and at certain outside temperatures usually between 10 and 15 degrees it used to make a honking noise on then off on then off constantly. The whining went up and down with the engine revs. Really is quite intrusive inside the car. No noise from the engine bay however.

Thanks to info on here I had my local Volvo specialist change a pipe from
The compressor that Volvo updated with silencer baffles. It’s sorted the honking noise but the whining is still the same if not worse at times.

Noisy AC is a common issue on these cars, anyone sorted it once and for all? Thinking now is the compressor could be bad as well but it’s only done 45,000 miles. Our 2012 XC70 has a silent AC system and has never been touched to my knowledge.

Thanks
Is it low on refrigerant? The compressor can make noise if its low on gas.

A/C compressor's aren't cheap, so it would be best to get the refrigerant level checked first.

My car makes the noise too... I've never been able to figure it out. It settles when the a/c is re-gassed, but it returns a few months down the line.

I wouldn't "jump" at replacing the compressor, as I've seen posts where people changed the compressor and it didn't make a bit of difference.
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2007 S80 2.4 D5 (P3) - 110,000 miles
2008 V70 2.4 D5 (P3) - 163,000 miles

Last edited by Kev0607; Oct 30th, 2023 at 15:57.
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