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C15 Fan Problem

Discussion in 'Trucks [ Eighteen Wheelers ]' started by 325TahoeSS, Jul 2, 2016.

Page 1 of 2
  1. Jul 2, 2016 #1
    325TahoeSS

    325TahoeSS Light Load Member

    150
    71
    Feb 11, 2012
    Roma, Tx
    0
    I have a 2006 W-9 with a C15 and just a little while ago I took her in to get her washed. I got my engine washed & left. Now my fan won't shut off! Already checked the air line & have no air leaks. Engine fan switch is off & so is the A.C. Need help.
     
    325TahoeSS, Jul 2, 2016
    325TahoeSS, Jul 2, 2016
    #1
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  3. Jul 2, 2016 #2
    baha

    baha Road Train Member

    4,137
    2,834
    Jul 25, 2013
    ga
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    Follow the ele. wire from fan sol. to 1st. connection and pull it a part ck, for water inside?
     
    baha, Jul 2, 2016
    baha, Jul 2, 2016
    #2
    AModelCat Thanks this.
  4. Jul 2, 2016 #3
    dustinbrock

    dustinbrock Road Train Member

    1,306
    900
    Apr 19, 2012
    saskatoon,sk
    0
    If that doesn't fix it do the same to the a/c high pressure switch.
     
    dustinbrock, Jul 2, 2016
    dustinbrock, Jul 2, 2016
    #3
  5. Jul 2, 2016 #4
    kalh7

    kalh7 Light Load Member

    186
    62
    Mar 28, 2007
    southern illinois
    0
    I might be wrong here but if I remember correctly they use air to turn them off instead of on like they used to.
     
    kalh7, Jul 2, 2016
    kalh7, Jul 2, 2016
    #4
  7. Jul 2, 2016 #5
    gunner76

    gunner76 Medium Load Member

    500
    137
    Mar 11, 2010
    IA
    0
    That's the way both our CAT motors are.
     
    gunner76, Jul 2, 2016
    gunner76, Jul 2, 2016
    #5
  8. Jul 2, 2016 #6
    baha

    baha Road Train Member

    4,137
    2,834
    Jul 25, 2013
    ga
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    The air switch is still powered by 12v. from the a/c over heated or switch on head that turns fan on when eng. is too hot,also some cat eng. have a sen. on intake man. that will turn fan on if its too hot, hope it drys out tonight on its own for you?
     
    baha, Jul 2, 2016
    baha, Jul 2, 2016
    #6
  9. Jul 3, 2016 #7
    Hurst

    Hurst Registered Member

    6,618
    12,265
    Aug 24, 2011
    Tampa, Fl
    0
    I had this problem a couple yrs back. Turned out to be the plug for the AC High Pressure switch.

    Hurst
     
    Hurst, Jul 3, 2016
    Hurst, Jul 3, 2016
    #7
    dustinbrock Thanks this.
  10. Jul 3, 2016 #8
    bigstank

    bigstank Light Load Member

    87
    18
    Mar 4, 2013
    missouri
    0
    Unplug your ac sensor switch up by the radiator and dry it off then plug it back in
     
    bigstank, Jul 3, 2016
    bigstank, Jul 3, 2016
    #8
  11. Jul 3, 2016 #9
    bigguns

    bigguns Road Train Member

    2,846
    6,848
    Jun 13, 2013
    Omega,GA
    0
    Never, never, never pressure wash an engine. That 3000psi drives water and dirt in through gaskets, electrical connections and other places you don't want it to be.
     
    bigguns, Jul 3, 2016
    bigguns, Jul 3, 2016
    #9
  12. Jul 15, 2016 #10
    325TahoeSS

    325TahoeSS Light Load Member

    150
    71
    Feb 11, 2012
    Roma, Tx
    0
    well thanks everyone.... it was the wire harness from the AC plug to the engine. $65 buck to fix
     
    325TahoeSS, Jul 15, 2016
    325TahoeSS, Jul 15, 2016
    #10
    dustinbrock and bigstank Thank this.
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