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Fan wont stop running

Discussion in 'Trucks [ Eighteen Wheelers ]' started by united972, Feb 13, 2017.

  1. Feb 13, 2017 #1
    united972

    united972 Light Load Member

    157
    22
    May 26, 2016
    0
    I have freight liner classic with a Detroit 60. The fan clutch wont turn on.

    A few people mentioned some sensors like the AC pressure and fan clutch solenoid does any know where these are? Or what u think could be wrong?
     
    united972, Feb 13, 2017
    united972, Feb 13, 2017
    #1
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  3. Feb 13, 2017 #2
    Old Man

    Old Man Road Train Member

    4,597
    13,466
    Apr 3, 2009
    Oklahoma City, OK
    0
    Is it locked on or off?
     
    Old Man, Feb 13, 2017
    Old Man, Feb 13, 2017
    #2
  4. Feb 14, 2017 #3
    united972

    united972 Light Load Member

    157
    22
    May 26, 2016
    0
    LOCKED ON
     
    united972, Feb 14, 2017
    united972, Feb 14, 2017
    #3
  5. Feb 14, 2017 #4
    magoo68

    magoo68 Road Train Member

    3,393
    5,383
    Jun 11, 2011
    st malo mb canada
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    If your compressor kicks in often I'd suspect a leaking fan hub..otherwise it's often a AC issue or unplugged sensor
     
    magoo68, Feb 14, 2017
    magoo68, Feb 14, 2017
    #4
  7. Apr 17, 2017 #5
    Phvbk

    Phvbk Bobtail Member

    6
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    Jul 17, 2014
    Brooklyn, NY
    0
    Need your help, guys. I have cat c15 with a fan running ON all the time. Just disconnected the air line from the clutch, started the engine and the air flows. When I turn the manual fan switch ON the air flow stops.
    Does it mean that I have issues with fan clutch? Or possibly something wrong with solenoid?
     
    Phvbk, Apr 17, 2017
    Phvbk, Apr 17, 2017
    #5
  8. Apr 19, 2017 #6
    Steve62

    Steve62 Light Load Member

    170
    98
    Mar 5, 2015
    Northern BC
    0
    If there is no air getting to the clutch fan it will stay on all the time. Once air pressure gets to the clutch fan it should turn off. Ch ck lines and fitting going to the clutch fan.

    The switch is working, when you turn the witch on it stops the air pressure from going to the fan. Which turns the fan on.
     
    Steve62, Apr 19, 2017
    Steve62, Apr 19, 2017
    #6
  9. Apr 19, 2017 #7
    RustyBolt

    RustyBolt Road Train Member

    2,015
    3,166
    Feb 21, 2015
    Bement, IL
    0
    If air is flowing through that hose, and stops when you turn on the manual switch, then your fan clutch is the problem. If it were anything else, you wouldn't have air flow at that hose at all.
     
    RustyBolt, Apr 19, 2017
    RustyBolt, Apr 19, 2017
    #7
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