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Engine Overheating



Engine Overheating

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 mechanical cooling fan
* 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. Component Tests and General Diagnostics

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