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Engine Overheating

Engine Overheating (LA3, LY9)

Diagnostic Aids
The engine may overheat due to an intermittent operation of one of the following components:
^ The after boil heater pump
^ The coolant bypass solenoid
^ The coolant bypass valve
^ The electric cooling fans
^ The thermostat

For electrical inspection of the cooling fans and the after boil heater pump, refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.




Steps 1 - 13:




Steps 14 - 18:




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