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2002 Dodge Caravan Radiator Fans

Tiny
M.D.L.
  • MEMBER
  • 2002 DODGE CARAVAN
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 58,000 MILES
Hi I hope you can help. The fans keep running after I turn off A.C. Even when engine is cold. They sometimes run up to ten min. After it's turned off. Relay on left top bumper replaced new, pressure switch new. Dealer replaced fuse box and the little computer mouted on front of fuse box. Nothing has canged anything. Any Idea What's Wrong?
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Thursday, October 2nd, 2008 AT 2:28 PM

4 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,702 POSTS
Hi:

Has the temp sending unit been replaced?

Joe
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Friday, October 3rd, 2008 AT 11:27 AM
Tiny
M.D.L.
  • MEMBER
  • 3 POSTS
The water temp. Is working ok. I can let run till temp. Comes up and starts fans with A.C. Off they will run till temp. Goes down they will cycle on and off. If you turn on A.C. Till they come on then turn off A.C. They stay running for about 5 to 10 min. Even when engine cold.
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Friday, October 3rd, 2008 AT 6:07 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,702 POSTS
Hi:
I want you to try something. Remove the relay and see of the fans keep running. If they do, there must be a short. If I recall correctly, the relay is the last place the power goes before the fans. By removing the relay, the fans should stop unless there is a short. Follow the wires from the fans to the wiring harness. Where the harness leads should be the location of the relay.

Let me know what happens.
Joe
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Friday, October 3rd, 2008 AT 10:53 PM
Tiny
M.D.L.
  • MEMBER
  • 3 POSTS
Hi Joe I ave tried that, I think the problem is in the P.C. M. It is what controls the relay. THANKS for your help. M.D.L.
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Saturday, October 4th, 2008 AT 2:07 PM

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