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Whining 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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bmdubya1198
Posts: 6338
Joined: 30 December 2014
Year and Model: 2K V70R M56
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Re: Whining Noise

Post by bmdubya1198 »

Oil cooler thermostat... interesting. I've had mine off quite a few times, and I really didn't notice it before I took it off the first time.
00 V70R Venetian Red/Charcoal M56 Swapped 214k
07 XC90 V8 AWD Sport Titanium Grey/Black 220k
92 245 White/Beige 249k
91 944 Turbo 175k
…and a bunch of other stuff
Sold-
03 S60 2.4T
00 S70 GLT
98 V70 GLT
93 944
98 S90
95 850 GLT
01 S60 2.4T
05 S60R M66
08 S40 2.4i
88 744 Turbo M46

kaneelschep
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Joined: 19 June 2013
Year and Model: '96 850 2liter t5
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Post by kaneelschep »

Did anything come out of this?
since a short time I have exactly the same whine that bmdubya1198 describes.
and it definetely also comes from the powersteering pump or that neighbourhood.
I read of more people having it. Even after replacing pump and tensioner/roller.

I never touched the oil cooler.. And that is situated lower right?

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bmdubya1198
Posts: 6338
Joined: 30 December 2014
Year and Model: 2K V70R M56
Location: Charlotte, NC
Has thanked: 304 times
Been thanked: 517 times

Post by bmdubya1198 »

The oil cooler thermostat is located under the harmonic balancer. A little box with the two oil cooler lines going into it.
I actually removed my serpentine belt a couple weeks ago and started it cold to see if the noise was still there, and sure enough, it was. That's pretty much all the reassurance I needed to tell it's the thermostat making that noise.
00 V70R Venetian Red/Charcoal M56 Swapped 214k
07 XC90 V8 AWD Sport Titanium Grey/Black 220k
92 245 White/Beige 249k
91 944 Turbo 175k
…and a bunch of other stuff
Sold-
03 S60 2.4T
00 S70 GLT
98 V70 GLT
93 944
98 S90
95 850 GLT
01 S60 2.4T
05 S60R M66
08 S40 2.4i
88 744 Turbo M46

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