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Engine fan won't shut off 99 379 w/ a 60 series

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Nextlvl, Feb 7, 2017.

Page 3 of 3
  1. Feb 7, 2017 #21
    Smellfunny

    Smellfunny Road Train Member

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    South Carolina
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    I am pretty sure that is going to be your issue. The ECM programming.
     
    Smellfunny, Feb 7, 2017
    Smellfunny, Feb 7, 2017
    #21
    Nextlvl Thanks this.
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  3. Feb 7, 2017 #22
    Nextlvl

    Nextlvl Bobtail Member

    17
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    Jan 5, 2013
    0
    I am going to ask the detroit shop about that tomorrow. Hopefully I can change that with my software. If not, I'm sure they'll help me out $$! Thanks guys for the advice!!!
     
    Nextlvl, Feb 7, 2017
    Nextlvl, Feb 7, 2017
    #22
  4. Feb 8, 2017 #23
    JPenn

    JPenn Road Train Member

    1,829
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    Mar 5, 2008
    Northern Tier PA
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    Silly question, but didn't see anyone else ask. Do you have a manual fan switch on the dash to turn the fan on? If so, did you check it, or the wires to it, aren't shorted?
     
    JPenn, Feb 8, 2017
    JPenn, Feb 8, 2017
    #23
  5. Feb 8, 2017 #24
    Big Don

    Big Don "Old Fart"

    17,996
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    Sounds like a logical question to me!
     
    Big Don, Feb 8, 2017
    Big Don, Feb 8, 2017
    #24
  7. Feb 8, 2017 #25
    Nextlvl

    Nextlvl Bobtail Member

    17
    1
    Jan 5, 2013
    0
    Yes sir, that was the first thing I tested. I am gonna work on a resolution tomorrow, I'll post when I have an update.
     
    Nextlvl, Feb 8, 2017
    Nextlvl, Feb 8, 2017
    #25
  8. Dec 3, 2019 #27
    Tmt Trucking

    Tmt Trucking Bobtail Member

    3
    0
    Dec 3, 2019
    0
    What was your update?
     
    Tmt Trucking, Dec 3, 2019
    Tmt Trucking, Dec 3, 2019
    #27
  9. Dec 3, 2019 #27
    Tmt Trucking

    Tmt Trucking Bobtail Member

    3
    0
    Dec 3, 2019
    0
    I’m goin through the same issue do you have an update?
     
    Tmt Trucking, Dec 3, 2019
    Tmt Trucking, Dec 3, 2019
    #27
  10. Jun 13, 2024 #28
    MARE

    MARE Bobtail Member

    12
    3
    Aug 7, 2014
    0
    Which wire particular? In the rear there is OEM connector plug on the low then there's plug in the middle and on the top is power supply plug. which one is that wire?
     
    MARE, Jun 13, 2024
    MARE, Jun 13, 2024
    #28
  11. Jun 13, 2024 #29
    MARE

    MARE Bobtail Member

    12
    3
    Aug 7, 2014
    0
    I just changed ecm ddec3 for ddec4. I'm having Freightliner Fld 12.7 Detroit. My fan clutch is always on and fan clutch switch from cabin won't react as well. Is it possible that they didnt reprogramed correctly ddec4 to work for ddec3 truck?
     
    MARE, Jun 13, 2024
    MARE, Jun 13, 2024
    #29
  12. Jun 14, 2024 #30
    Smellfunny

    Smellfunny Road Train Member

    1,445
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    Jan 28, 2012
    South Carolina
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    Very possible.
     
    Smellfunny, Jun 14, 2024
    Smellfunny, Jun 14, 2024
    #30
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