Engine Runs Cold

Engine Cooling

Engine Runs Cold

1. Check operation of viscous unit. Is viscous unit operating correctly?

NO - See Repair, Viscous coupling
YES- Proceed to next step.

2. Is thermostat correct type and operating?
If problem is not diagnosed: Proceed to next step.

3. Are the air conditioning fans operating continuously?

YES - Refer to Heating and Air Conditioning.
NO- Proceed to next step.

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