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detroit fan on early?

Discussion in 'Trucks [ Eighteen Wheelers ]' started by HellStomper116, May 1, 2015.

  1. May 1, 2015 #1
    HellStomper116

    HellStomper116 Bobtail Member

    16
    8
    Feb 20, 2015
    Christiansburg, VA
    0
    1998 12.7 series 60
    Fan cuts on at 130 from fifteen seconds to several minutes then off. Continues this behavior 140. 150. 160 etc.
    what's going on? I was under impression 190 is when fan should kick on. ..
    What should i test. I don't wanna burn out my fan clutch or burn fuel money! Help!
     
    HellStomper116, May 1, 2015
    HellStomper116, May 1, 2015
    #1
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  3. May 1, 2015 #2
    heavyhaulerss

    heavyhaulerss Road Train Member

    3,723
    2,040
    Dec 23, 2009
    AL/TN BORDER
    0
    any codes? sounds like it could be a ground wire connection.
     
    heavyhaulerss, May 1, 2015
    heavyhaulerss, May 1, 2015
    #2
  4. May 1, 2015 #3
    HellStomper116

    HellStomper116 Bobtail Member

    16
    8
    Feb 20, 2015
    Christiansburg, VA
    0
    Don't see any codes. .. but the display don't work either :/
    I'll check the for grounding problems. Thanks. Have to get to a shop and read the codes
     
    HellStomper116, May 1, 2015
    HellStomper116, May 1, 2015
    #3
  5. May 1, 2015 #4
    Heavyd

    Heavyd Road Train Member

    7,812
    6,265
    Feb 4, 2009
    0
    Could be the a/c high pressure switch.
     
    Heavyd, May 1, 2015
    Heavyd, May 1, 2015
    #4
  7. May 1, 2015 #5
    HellStomper116

    HellStomper116 Bobtail Member

    16
    8
    Feb 20, 2015
    Christiansburg, VA
    0
    How would that have affect on the fan?
     
    HellStomper116, May 1, 2015
    HellStomper116, May 1, 2015
    #5
  8. May 1, 2015 #6
    lester

    lester Midwest's #1 Feed Hauler

    2,935
    7,940
    Jan 2, 2012
    NW, Iowa
    0
    Your ac system can tell your fan to turn on just like your cooling system.
     
    lester, May 1, 2015
    lester, May 1, 2015
    #6
    HellStomper116 Thanks this.
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