Engine Runs Cold

Engine Runs Cold

Before conducting any cooling system diagnosis, see description and operation, Engine Cooling.

1. Check operation of fan clutch. Does it work?
NO - Replace
YES - Continue.

2. Is thermostat correct type and operating?
NO - Replace
YES - Continue.

3. Are the air conditioning fans operating continuously?
YES - Check circuit.
NO - Continue.

4. Is temperature sender and gauge giving accurate readings?
Substitute parts and compare readings. If problem is not diagnosed repeat tests, starting at 1.