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hertfordnc's avatar
hertfordnc
Explorer
Jul 16, 2014

dodge 3500 cummins clutch fan engages on flat with no load

I've had this 2003 for just a month, still figuring things out. With the AC on, running empty on flat ground at 60mph the temp rises to about 210 and the clutch fan engages until the temp drops. ...
Tow Vehicles
rhagfo's avatar
rhagfo
Explorer III
Jul 16, 2014
You should never be above 190 without a load! Replace the T-stat as mentioned before with a Cummins T-stat. Make sure the outside of the radiator is clean and oil free, check the water pump, simple two bolt replacement.
I only got my 01 up to 205 pulling a 7% grade on a 95 degree day running at 19,000# GCVW.

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