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troubleshooting engine cooling fan

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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scot850
Posts: 14892
Joined: 5 April 2010
Year and Model: 2000 V70 R
Location: Calgary, Alberta, Canada
Has thanked: 1850 times
Been thanked: 1710 times

Re: troubleshooting engine cooling fan

Post by scot850 »

Good to know. I'll try it and feed back for others in the future.

Thanks again,

Neil.
2006 V70 2.5T AWD Polestar tune
2000 V70 R - still being an endless PITA
2006 XC70 - Our son now has this and still parked in our garage
2003 Toyota 4Runner V8 Limited
2015 Kia Sportage EX-L - Sold
1993 850 GLT -Sold
1998 V70 XC - Sold
1997 Volvo 850 SE NA - Went to niece in California - Sold
2000 V70 SE NA - Sold

scot850
Posts: 14892
Joined: 5 April 2010
Year and Model: 2000 V70 R
Location: Calgary, Alberta, Canada
Has thanked: 1850 times
Been thanked: 1710 times

Post by scot850 »

Well following all the great advice, I can strike off the cooling fan I believe.

Using Lee's advice I tested the relay itself after checking the fan and ETC/temp sensor unit which checked out.

Used a length of wire and clip to attached the wire to the earth strap at the top of the block near the top torque mount. I knew this was good as I use it for the -ve lead for my battery tender and it works fine.

Disconnected the middle connector on the relay and used a small electrical screw driver to touch each of the relay contacts in turn (1 for each speed). Both ran the fan up immediately and fan slowed when removed. So relay also looks good. Ignition does not need to be on, as Lee rightly stated the red lead to the relay is a constant live.

On to look at other cooling options for the leak. Thanks for all with the help on getting this far.

Neil.
2006 V70 2.5T AWD Polestar tune
2000 V70 R - still being an endless PITA
2006 XC70 - Our son now has this and still parked in our garage
2003 Toyota 4Runner V8 Limited
2015 Kia Sportage EX-L - Sold
1993 850 GLT -Sold
1998 V70 XC - Sold
1997 Volvo 850 SE NA - Went to niece in California - Sold
2000 V70 SE NA - Sold

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