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Fan won't shut off

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Bill43452, May 15, 2012.

  1. May 15, 2012 #1
    Bill43452

    Bill43452 Bobtail Member

    34
    0
    Apr 25, 2012
    0
    07 International 9400i w/Cummins ISX my fan won't shut off. Can someone please tell me where I can find the a/c high pressure switch so I can replace it. Thanks!
     
    Bill43452, May 15, 2012
    Bill43452, May 15, 2012
    #1
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  3. May 17, 2012 #2
    Graglor

    Graglor Light Load Member

    62
    15
    Aug 17, 2011
    Langley, bc.
    0
    Follow the thinner line off the a/c pump. It will be the first sensor from there. Put a thin cotter pin in the plug and wait up to three minutes. If the fan shuts off, it's the sensor.
     
    Graglor, May 17, 2012
    Graglor, May 17, 2012
    #2
    Bill43452 Thanks this.
  4. May 19, 2012 #3
    Bill43452

    Bill43452 Bobtail Member

    34
    0
    Apr 25, 2012
    0
    ok, replaced A/C High Pressure switch and high pressure sensor. Turned on truck and the fan spins but you can hear air getting to it. When you shut the truck off I hear a chirp out of the sensor and hear a leak (puff) of air off the fan hub and fan stops. should air come out of the fan hub?
     
    Bill43452, May 19, 2012
    Bill43452, May 19, 2012
    #3
  5. May 19, 2012 #4
    country29

    country29 Medium Load Member

    518
    157
    Feb 27, 2010
    Arkansas
    0
    no. but when you turn the key off wait 15 seconds and you will here a puff of air, then the fan will lock in when the system is functioning normally.
     
    country29, May 19, 2012
    country29, May 19, 2012
    #4
  7. May 19, 2012 #5
    bender

    bender Road Train Member

    2,105
    1,361
    Jul 20, 2010
    Don't Kid Yourself
    0
    No, You should never have air leaking from the fan hub. Your fan hub is air release and the leak is causing the fan to stay engaged. You can kit or replace the fan hub.
     
    bender, May 19, 2012
    bender, May 19, 2012
    #5
  8. May 20, 2012 #6
    AUSSIE DAVE

    AUSSIE DAVE Road Train Member

    1,032
    176
    Feb 21, 2010
    OZ - Brisbane
    0
    often u can turn the seal over and it will fix it, or install a new kit
     
    AUSSIE DAVE, May 20, 2012
    AUSSIE DAVE, May 20, 2012
    #6
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