2016 Ram Cummins Cooling Fan Always Engaged

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?
 
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.
 
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