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Detroit 60 Series radiator fan

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by dhhobie2, Mar 17, 2017.

  1. Mar 17, 2017 #1
    dhhobie2

    dhhobie2 Bobtail Member

    4
    0
    Mar 17, 2017
    0
    I Have a 2000 Freightliner Century Class with a Detroit 60 series motor. I replaced the belts on the radiator fan, when I fired it up noticed the fan was on constant.is it supposed to be on or is there a clutch on the fan? so they run on air?
     
    dhhobie2, Mar 17, 2017
    dhhobie2, Mar 17, 2017
    #1
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  3. Mar 20, 2017 #2
    passingthru69

    passingthru69 Road Train Member

    8,740
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    Jul 12, 2009
    davenport,Ia / ratchaburi, thailand
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    Do you have it on a/c or defrost. If so it will kick the fan on. With key off, fan will be locked in. Turn key on and see if fan free spins, if not check the air line to the fan selinoid and check the wires to the selinoid
     
    passingthru69, Mar 20, 2017
    passingthru69, Mar 20, 2017
    #2
    Ezrider_48501 Thanks this.
  4. Jun 13, 2017 #3
    perez05pr

    perez05pr Bobtail Member

    49
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    Oct 20, 2010
    ohio
    0
    i have the same problem! fan is constantly on..already replaced the selenoid, it has 12 volts on 1 wire but no groung to the other! i heard the groung is controlled by the ecm..
     
    perez05pr, Jun 13, 2017
    perez05pr, Jun 13, 2017
    #3
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