Engine Fails To Reach Normal Operating Temperature

Engine Fails To Reach Normal Operating Temperature

Diagnostic Aids

The engine may fail to reach normal operating temperature due to an intermittent operation of one of the following components:

* The thermostat
* The electric fan system
* The mechanical fan system

For electrical inspection of the electrical fan system, refer to Testing for Intermittent Conditions and Poor Connections (Testing for Intermittent Conditions and Poor Connections).