6nz fan won't shut off

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by jriol94, Dec 3, 2020.

  1. 6wheeler

    6wheeler Road Train Member

    2,696
    4,773
    Aug 30, 2009
    0
    I had the same problem with the awful 6nz here. And people think these motors are so great.
    Anyway, find a hot wire run it through the dash to a toggle switch, run the other side of the toggle connection to the hot side of that solenoid. That's what I did.
     
  2. Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.

  3. little cat 500

    little cat 500 Road Train Member

    2,048
    1,092
    Jan 17, 2010
    Abbottstown PA
    0
    Has nothing to do with the 6nz that fan hub could care less what motor its on are you sure the fan hubs good ?
     
    Roberts450 Thanks this.
  4. p608

    p608 Road Train Member

    2,181
    2,992
    Nov 10, 2016
    0
    If it sat a long time the clutch is probably stuck together
     
  5. Dino soar

    Dino soar Road Train Member

    4,790
    26,864
    Dec 8, 2017
    0
    Why is your solenoid leaking air if you just replaced it?

    I don't know which type of fan clutch you have, but you may have the type that requires air to not turn. Then if you were to lose air for some reason the fan will lock up and keep the truck cool, like if your solenoid went bad and stopped supplying air.

    Put shop air directly to the fan clutch and see if it releases.
     
  • Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.