Engine Fails to Reach Normal Operating Temperature

Engine Fails To Reach Normal Operating Temperature

Engine Fails to Reach Normal Operating Temperature / Steps 1 - 7:

Diagnostic Aids
The engine may fail to reach normal operating temperature due to an intermittent operation of one of the following components:
- The coolant bypass valve
- The thermostat


For electrical inspection of the coolant bypass solenoid, refer to Testing for Intermittent and Poor Connections.
Diagnostic Aids