I have a 2001 f250 sd and when I go up a hill/mountain it causes it to overheat, all the other time it is fine. Except when I go over 3,000 rpms...new belt, reservoir (small leak) and antifreeze ...

Asked by Jul 20, 2017 at 05:19 PM about the 2001 Ford F-250 Super Duty XL 4WD Extended Cab SB

Question type: Maintenance & Repair

2 Answers

98,375

It could be the fan is not operating as it should, the radiator is restricted internally so the flow is too low for an increase in engine load. I had a T-Bird that would do the same thing, found out it was the radiator, replaced it and no more cooling problems.

74,155

What engine? I would do a full cooling system service - flush, coolant, hoses etc. Make sure the cooling fan is working.

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