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Engine Cooling Symptom Chart: Notes

ENGINE COOLING SYMPTOM CHART

Problem Possible Cause Action
  • Loss of Coolant
  • Radiator.
  • Water pump seal.
  • Radiator hoses.
  • Heater hoses.
  • Heater core.
  • Engine gaskets.
  • Coolant recovery reservoir bottle.
 See PINPOINT TEST 1: LOSS OF COOLANT .
  • The Engine Overheats
  • Thermostat.
  • Water pump.
  • Internal engine coolant leak.
  • Radiator.
  • Heater core.
  • Inoperative cooling fan.
  • Radiator cap.
 See PINPOINT TEST 2: THE ENGINE OVERHEATS .
  • The Engine Does Not Reach Normal Operating Temperature
  • Thermostat.
 See PINPOINT TEST 3: THE ENGINE DOES NOT REACH NORMAL OPERATING TEMPERATURE .
  • The Block Heater Does Not Operate Properly
  • Block heater cable.
  • Block heater.
 See PINPOINT TEST 4: THE BLOCK HEATER DOES NOT OPERATE PROPERLY  .
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