Engine Overheating

Engine Overheating

Engine Overheating / Steps 1 - 3 (Continued):

Engine Overheating / Steps 4 - 18:

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 and Poor Connections.
Diagnostic Aids