Forum Discussion

mike-uswest's avatar
mike-uswest
Explorer II
Mar 22, 2020

Truck overheating towing on long steep grades.

The other day I came out of Death Valley to Beatty which is long and steep, but not that bad, but the transmission temp got up to 230 for most of the trip. I stopped part of the way up and let it cool...
Tow Vehicles
garyp4951's avatar
garyp4951
Explorer III
Mar 24, 2020
The 2003 5.9 Cummins had an additional torque converter cooler mounted on the driver side at the rear on the engine, and I would check this also.
As stated before, replacing the vicious fan clutch with only oem did the trick for me.

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