Fan runs while car is shut off
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Northstar Engines and System Technical Discussion Discussion, Fan runs while car is shut off in Cadillac Engine Technical Discussion; Our 94 Seville runs the battery down b/c a fan is running while the car is shut off. We sometimes ...
  1. #1
    rblud87 is offline Cadillac Owners Member
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    Fan runs while car is shut off

    Our 94 Seville runs the battery down b/c a fan is running while the car is shut off. We sometimes disconnect this... but is there a way to get it to stop running?
    Thanks

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  3. #2
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
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    Re: Fan runs while car is shut off

    If it is running continuously, you probably have to replace the blower motor.

  4. #3
    RedGalant2k1's Avatar
    RedGalant2k1 is offline Cadillac Owners Connoisseur
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    Re: Fan runs while car is shut off

    the fan on the inside, or the fan in the engine bay?

  5. #4
    rblud87 is offline Cadillac Owners Member
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    Re: Fan runs while car is shut off

    The fan in the engine bay. It does not run continuously but starts and stops periodically.

  6. #5
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
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    Re: Fan runs while car is shut off

    Are you talking about the radiator cooling fans or the HVAC blower motor?

  7. #6
    Submariner409's Avatar
    Submariner409 is offline If it won't run, install a big stereo
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    Re: Fan runs while car is shut off

    The fan(s) MAY run for 20-30 seconds, once or twice, after a hot drive. If one or both run after that cooldown cycle, something is wrong with the temperature sensor, the fan control module, or the control relay. Sounds like a dealer do.....

  8. #7
    rblud87 is offline Cadillac Owners Member
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    Re: Fan runs while car is shut off

    HVAC blower fan

  9. #8
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
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    Re: Fan runs while car is shut off

    Perhaps you have "afterblow" enabled.

  10. #9
    Harry Yarnell is offline Cadillac Owners Fanatic
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    Re: Fan runs while car is shut off

    If it's the HVAC fan, the module that controls it is bad. I've got good used (tested) modules for $35 plus ship.

  11. #10
    cadillacmike68's Avatar
    cadillacmike68 is offline Cadillac Owners Connoisseur
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    Re: Fan runs while car is shut off

    Quote Originally Posted by Ranger View Post
    Perhaps you have "afterblow" enabled.
    Is that like an afterburner

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