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Symptom Chart

WARNING: This page is about a different car, the 2005 Lincoln LS. However, it is still accessible from the selected car via links, so may be relevant.
SYMPTOM CHART

Condition Possible Sources Action
  • Loss of engine coolant
  • Radiator.
  • Thermostat housing assembly.
  • Auxiliary coolant pump.
  • Coolant control valve.
  • Oil cooler.
  • PCV heater system.
  • Throttle body adapter heating.
  • Coolant pump seal.
  • Radiator hoses.
  • Heater hoses.
  • Heater core.
  • Engine gaskets.
  • Degas bottle.
  • The engine overheats
  • Thermostat.
  • Airlock in the system.
  • Coolant pump.
  • Internal engine coolant leak.
  • Radiator.
  • Radiator airflow obstruction.
  • Cooling fan.
  • Cooling fan wiring.
  • Pressure relief cap.
  • The engine does not reach normal operating temperature
  • Thermostat.
  • The block heater does not operate correctly
  • Block heater power cable.
  • DISCONNECT the power cable from the heater.
  • Block heater.
  • CHECK the resistance in all 3 power cable circuits. If the resistance is greater than 5 ohms in any circuit, INSTALL a new power cable. If the resistance is less than 5 ohms in all 3 circuits, INSTALL a new block heater.
  • Noisy cooling fan operation
  • Foreign particle contamination.
  • NOTE: Make sure key is in the OFF position and the cooling fan has stopped rotating before servicing. REMOVE the contaminants from the cooling fan and shroud. CHECK for normal operation.
  • The electric cooling fan is inoperative
  • Circuitry.
  • Cooling fan motor.
  • The electric cooling fan stays on all the time
  • Circuitry.
  • A/C system fault.
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