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Where does the Cooling Fan Grounding connect to?

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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mouchra
Posts: 17
Joined: 14 March 2005
Year and Model: V70 GLT 1998
Location: Lake Forest, CA

Where does the Cooling Fan Grounding connect to?

Post by mouchra »

Hello Everyone,

We purchased a 1998 S70 GLT to add to our volvo collection.
The cooling fan would not go on after running the car in the freeway and then driving in the city consequently overheating. After a few tests and repairs (test relay, test fan, replace thermostat :? ) I discovered it was the grounding connection for the fan. I traced it to the harness that goes to the computer box. Since I was not able to determine where the grounding connection is, I installed a temporary wire from the fan to a bolt in the chassis (not my preferred choice to fix things :x ). Does any one know where the grounding connection would be at? I'm thinking that if it goes in to the computer box, other components might not be grounded as well.
I would greatly appreciate your comments! :)
1998 S70 GLT
1998 V70 GLT
Previous
1985 740 GLE

Ozark Lee
MVS Moderator
Posts: 14798
Joined: 7 September 2006
Year and Model: Many Volvos
Location: USA Midwest
Has thanked: 4 times
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Post by Ozark Lee »

The fan ground point is 31/55 and it goes to the block. Such as it is, here is the diagram from the schematics.
Ground Point.pdf
(220.11 KiB) Downloaded 247 times
...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

mouchra
Posts: 17
Joined: 14 March 2005
Year and Model: V70 GLT 1998
Location: Lake Forest, CA

Post by mouchra »

Ozark,

Thank you very much for the diagram :D , I will check the connection.
Do you know if these grounding points are similar or equal for the V 70 same year?

Roger
1998 S70 GLT
1998 V70 GLT
Previous
1985 740 GLE

Ozark Lee
MVS Moderator
Posts: 14798
Joined: 7 September 2006
Year and Model: Many Volvos
Location: USA Midwest
Has thanked: 4 times
Been thanked: 75 times

Post by Ozark Lee »

The book shows them to all be the same across the S, V, and C lines.

...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

mouchra
Posts: 17
Joined: 14 March 2005
Year and Model: V70 GLT 1998
Location: Lake Forest, CA

Post by mouchra »

Thank you,

Roger
1998 S70 GLT
1998 V70 GLT
Previous
1985 740 GLE

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