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1995 850 Turbo AC compressor noise

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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2012
Posts: 50
Joined: 29 December 2013
Year and Model: 1995 850
Location: San Diego, CA

1995 850 Turbo AC compressor noise

Post by 2012 »

Hi fellow 850 owners...
I am experiencing a rather unpleasant whirling noise from the AC compressor when it is engaged, i.e. when the clutch kicks in. It goes away when it disengages. The noise is audible in the cabin, only when you turn the fan down low enough to hear it. Just wondering if some compressor noise is normal, or should it never be heard in the cabin? Car has 146000 miles and the AC is super cold, heck we even have to turn it down on warm days cause its too cold! Thank God for that problem, but am I ok or is it getting time for a new compressor?

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abscate
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Post by abscate »

AC compressor death song. The good news is you can pay attention to it and keep driving the car until it really gets loud...right now, as described, you will be ok. When you start getting pops and grinds that you can hear while driving, it's time.

Try listening with a hose to see if its in the body of the compressor or the clutch ( near the RHS) of car. If it is the clutch bearing, when it goes, you won't be able to use the car unless you buy a shorter serpentine belt and bypass the AC compressor
Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 XC90-in-Red
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Ozark Lee
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Post by Ozark Lee »

A whirring noise is normal but if it is grinding I would suggest replacing the compressor before it detonates. Once the compressor comes apart internally it distributes shrapnel through the system and the system needs to be flushed. The design of the condenser core is such that it really can't be flushed and it has to be replaced.

Even with a flush, a new orifice tube, and a new filter drier the chances of having a repeat failure increases about 10 fold.

...Lee
'94 850 N/A 5 speed
'96 Platinum Edition Turbo
Previous:
1999 V70XC - Nautic Blue - Totaled while parked.
1999 V70XC - RIP - Wrecked Parts Car.
1998 S70 T5
1996 850 N/A
1989 740 GLT
1986 740 GLT
1972 142 Grand Luxe

2012
Posts: 50
Joined: 29 December 2013
Year and Model: 1995 850
Location: San Diego, CA

Post by 2012 »

Thanks, I'll keep an "ear" on it...

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abscate
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Posts: 35273
Joined: 17 February 2013
Year and Model: 99: V70s S70s,05 V70
Location: Port Jefferson Long Island NY
Has thanked: 1498 times
Been thanked: 3810 times

Post by abscate »

My 1999 whirs after I did a major AC RR last year. Luckily we are a 2-3 month AC season latitude so I'm hoping to get 5 more years out of it.
Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 XC90-in-Red
Link to Maintenance record thread

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