engine over heating

Asked by Aug 18, 2014 at 12:19 PM about the 2004 Ford F-250 Super Duty XL 4WD Crew Cab LB

Question type: Maintenance & Repair

my ford f-250 SD 5.4 liter gas engine is running hot. pressure builds up in top of radiator.
changed water pump, thermostat, fan clutch, flushed engine and radiator. still running hot.
no water in oil, no oil in water, no air bubbles showing in coolant while running. any ideas
what could be causing it.

1 Answer

25

Depending on the age of the radiator, it could have blockage that is not cleared by the flush. that happened to one of our cars, we chased an overheating problem, not looking at the radiator any more because the radiator shop was supposed to have rod'ed it out. Turns out they had not, which we learned when we took it back out again, to another shop, it was discovered to be very badly blocked. Not a mechanic, just an experience I've had.

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