Section 03-03: Engine Cooling
1996 F-150, F-250, F-350, F-Super Duty, Bronco Vehicles and F-250, F-350 and F-Super Duty Vehicles with 7.3L Diesel Engines Workshop Manual
DIAGNOSIS AND TESTING

Symptom Chart — Engine Cooling

 
ENGINE COOLING
ConditionPossible SourceAction
  • Loss of Coolant
  • Damaged radiator.
  • Damaged water pump.
  • Loose/damaged radiator hoses.
  • Loose/damaged heater water hoses.
  • Damaged heater core.
  • Damaged engine gaskets.
  • Damaged radiator coolant recovery reservoir.
  • Internal engine coolant leak.
  • Engine Overheats
  • Damaged water thermostat.
  • Damaged water pump.
  • Cooling fan inoperative.
  • Plugged radiator.
  • Engine Does Not Reach Normal Operating Temperature
  • Damaged water thermostat.
  • Cooling fan.
  • Engine Block Heater Does Not Operate Properly
  • Block heater wiring.
  • Block heater.
  • 110-volt A/C power source inoperative.