2016 Ram Cummins Cooling Fan Always Engaged

Discussion in 'Tow Rigs and Trailers' started by Will Carter, Feb 27, 2020.

  1. Will Carter

    Will Carter Well-Known Member

    Joined:
    Mar 23, 2005
    Location:
    Burlington
    Swapped a new clutch in 6 months ago. Still no change.

    Too damn loud.

    Hot. Cold. A/C on or off.

    Searching through diesel truck forums is excruciating.

    Anybody come across this?
     
  2. tsconver

    tsconver Well-Known Member

    Joined:
    Nov 3, 2007
    Location:
    Durham, NC
    Any codes? It is electrical so maybe the feed wire is shorted? I have not seen anything like it posted on cummins forum.

    Did you use a cummins clutch? I know there were issues in past with non OEM fan clutches not lasting very long.
     
  3. Will Carter

    Will Carter Well-Known Member

    Joined:
    Mar 23, 2005
    Location:
    Burlington
    No codes. Not a real cummins fan. Completely stock. 160k miles. Done it for all the 40k miles I’ve owned it.
     
  4. Will Carter

    Will Carter Well-Known Member

    Joined:
    Mar 23, 2005
    Location:
    Burlington
    So instead of just bitching about it I actually tried to diagnose. My version of hptuners doesn’t let me activate that control switch for a Ram for some reason. But I did unplug the AC pressure switch and took off down the interstate. Thought I was on to something, 70mph no fan roar. Then I put my foot in it to load it up and the fan came on and never would go back off.
    Seems like clutch is clutching. Just the electric input is weird.
     
  5. tsconver

    tsconver Well-Known Member

    Joined:
    Nov 3, 2007
    Location:
    Durham, NC
    Are you tuned? If so I would go to the tuner and see what is going on. Would guess it is something in the tune.
     
  6. Will Carter

    Will Carter Well-Known Member

    Joined:
    Mar 23, 2005
    Location:
    Burlington
    Not to my knowledge. But for some reason my hptuners won’t pull the file. It’s older. Might need update or something.
     
  7. Fabrik8

    Fabrik8 Overcomplicator

    Joined:
    May 27, 2015
    Location:
    Huntersville

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