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S80 '06-'16 / V70 & XC70 '07-'16 General Forum for the P3-platform S80 and 70-series models |
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Noisy air conViews : 2113 Replies : 20Users Viewing This Thread : |
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Nov 24th, 2020, 23:27 | #11 | ||
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An independent Volvo garage replaced the timing belt for me last year. I replaced the aux belt, a/c belt & tensioner myself last year too (All genuine Volvo parts). I guess this is something for my local independent to have a look at. If it is the compressor that's the problem, I haven't got the equipment to evacuate the gas anyway. I might as well let him do that, as the car will be going to him anyway. Replacing a compressor is not something I fancy, or am equipped to do in terms of evacuating the system. Quote:
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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; Nov 25th, 2020 at 00:27. |
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Nov 25th, 2020, 10:59 | #12 | |
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Make sure whoever fits it knows what they are doing. I had a new compressor fitted to another vehicle a few years ago. The fitters didn't know that it needed to be charged with oil. It failed a short while later, and spat out metal throughout the air con system. The entire system needed to be replaced - condenser, evaporator, pipework - plus of course the compressor
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Nov 25th, 2020, 11:23 | #13 | |
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Nov 26th, 2020, 11:17 | #14 |
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If there is a very small leak, you'll eventually reach a gas level where the system still works, but the compressor squeaks. It's a whining noise that follows engine speed and goes avay if you turn AC off, of course. Happened to me last year (after 300000 km). A new condensor took care of the leak. The noise returned after a few weeks. Turned out the mechanic had failed to verify that the filling valve was tight after refilling the system. That fixed, then no problem.
Frequent use of the system tends to be better for longevity than sporadic use. Keep the AUTO mode active at all times. |
Nov 26th, 2020, 15:35 | #15 | |
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Nov 29th, 2020, 08:22 | #16 |
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Interesting thread I’d like to add a few points:
- it was never going to be the pulley bearing on the compressor - that spins constantly whether the a/c is on or off. If you had a constant noise that followed engine speed the it may have been bearing. - it’s been said and I’ve seen it a few times when a/c systems get low on gas they are whiny and noisey, which gets worse after it’s been running a few minutes. A good, honest a/c engineer will be able to detect this with his gauges. - there is a known issue on some Volvo’s circa 2010-2015 where noise comes from a valve in the system, there is a technical bulletin for it. - I would be another advocate of using second hand genuine compressors rather that new pattern parts. I’ve no experience specifically to back that up other than my general frustration with the mediocre quality of pattern parts in the trade currently (driven by consumers wanting lower price in preference of quality)
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Nov 29th, 2020, 08:48 | #17 | |
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Dec 3rd, 2020, 23:28 | #18 |
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I was driving my Dad's V70 (57 plate) recently & his A/C makes the exact same noise as mine does when the climate control is set to "auto".
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2007 S80 2.4 D5 (P3) - 110,000 miles 2008 V70 2.4 D5 (P3) - 163,000 miles |
Dec 8th, 2020, 23:49 | #19 |
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I happened across this interesting video...
https://m.youtube.com/watch?v=WPH8cK_eo14 ...still on topic and worth a look inside the reservoir. |
Dec 10th, 2020, 21:59 | #20 | |
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2007 S80 2.4 D5 (P3) - 110,000 miles 2008 V70 2.4 D5 (P3) - 163,000 miles |
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