Question about 2000 Ford Expedition

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2000 expedition ac fan want stop running. The car is off and the keys are out and the fan continues to blow. It stops when I crank the car. I changed the Blower Relay and it did not help.

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  • toneman2121
    toneman2121 Jun 01, 2010

    does the bower motor stop running when you turn the switch off?

  • bobstrom Jun 01, 2010

    When the car is turned off and the key is removed the defrost runs full blast. If I remove the "Blower Relay" from the box under the hood it will stop.
    Also, when I crank the car it stops.

  • toneman2121
    toneman2121 Jun 03, 2010

    thank you for your vote. have you resolved the problem?

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  • Master
  • 775 Answers

Well it seems to me that you've found the problem, the relay is stuck closed. looking at these wiring diagrams i have, fuse #23 supplys power to the relay. this circuit is hot at all times. so with the relay stuck, it would energize the motor. you can swap a relay of the same type with one from the same location. just be sure it has nothing to do with starting or running the car. most relays are identical. check the part number on the relay

Posted on Jun 01, 2010

Testimonial: "Thanks for the information."

  • 1 more comment 
  • toneman2121
    toneman2121 Jun 01, 2010

    SWAP RELAYS TO DETERMINE IF THE BLOWER MOTOR RELAY IS BAD

  • bobstrom Jun 01, 2010

    I purchased a new relay yesterday and put it in and it did not correct the situation.
    My wife just called and when she pushed the relay in this morning the fan did not come on. She has driven around town stoping and starting the car and it is working fine today.????
    The only way I could get it to stop last night was to pull out the blower relay??

  • toneman2121
    toneman2121 Jun 01, 2010

    well bud, i can't help you. the only thing i can think of is there may be a intermittent wiring problem. try wiggling wires around to see if the motor will run. or your wife is magic.

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