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1996 Ford Windstar Causes for engine cooling fan that won't

Tiny
MRFIXIT52
  • MEMBER
  • 1996 FORD WINDSTAR
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 202,621 MILES
Hi. My dad is a mechanic, He has a 1996 Ford Windstar 3.8 Litre and the engine cooling fan won't shut off. He has tried changing the temperature sensor and also the cooling fan relay. He wants to know of any possible causes to this problem.
Wednesday, March 26th, 2008 AT 7:31 PM

3 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
See below cooling fan circuitry


https://www.2carpros.com/forum/automotive_pictures/12900_f1_1.jpg




https://www.2carpros.com/forum/automotive_pictures/12900_f2_1.jpg

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Wednesday, March 26th, 2008 AT 7:40 PM
Tiny
SERVICE WRITER
  • MECHANIC
  • 9,123 POSTS
The CCRM (constant control realy module) is what was replaced? IF not that would be where I would go first. If it is the one that was replaced I would next check for an alternative power source getting to the system. I have seen wires for front O@ sensors get mixed into that circuit and give it power when it shouldn't have it. The PCM may ultimatley be the problem.

Usually the CCRM is the faulty link on these however.
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Wednesday, March 26th, 2008 AT 9:54 PM
Tiny
MRFIXIT52
  • MEMBER
  • 2 POSTS
Ok thank you both for your replies and I will let you know what the outcome is.
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Thursday, March 27th, 2008 AT 4:27 PM

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