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1996 Volvo 850 Engine cooling fan will not shut off

Tiny
SWBRO
  • MEMBER
  • 1996 VOLVO 850
Electrical problem
1996 Volvo 850 Front Wheel Drive Automatic 99,000 miles

I changed that battery car started fine. When I shut down the car the engine cooloing fan continued to run. ?The fan ran for about an hour and I disconnected the battery so as not to drain. Upon any reconnection of the battery the fan starts up. Help Please.
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Saturday, January 31st, 2009 AT 11:01 AM

1 Reply

Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
Hi swbro,

The cooling fans runs with power from the battery via a relay controlled by the ECM.
Either the relay is stuck or the battery replacement has shorted the ECM control circuit.

Unplug the relay or give it some knocks to see if it frees up. If possible, substitute a known good one to test.


https://www.2carpros.com/forum/automotive_pictures/192750_CoolingFanVolvo850_1.jpg

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Monday, February 2nd, 2009 AT 1:15 PM

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