FixVault

No. 17 Cooling System Concerns-Overheating: Notes

17 COOLING SYSTEM CONCERNS-OVERHEATING
DESCRIPTION 
  • Engine runs at higher than normal temperature/overheats.
POSSIBLE CAUSE 
  • Improper coolant level
  • Coolant leakage
  • Improper water/anti-freeze mixture
  • Poor radiator condition
  • Radiator hoses damage
  • Improper or damaged radiator cap
  • Coolant overflow system malfunction
  • Fans reverse rotation
  • Blown cooling fan control related fuses
  • PCM DTC is stored.
  • A/C system operation is improper.
  • Cooling fan is inoperative.
  • Improper tension of drive belt
  • Drive belt damage
  • Coolant leakage from climate control unit
  • Improper water temperature gauge operation
    • CHT sensor malfunction
    • Instrument cluster malfunction
  • Thermostat malfunction
  • Cylinder block or cylinder head malfunction (cracked, coolant restriction)