Engine runs cold

ENGINE RUNS COLD

Before conducting any cooling system diagnosis: See Description and operation, Engine cooling

1. Check operation of viscous unit. See Description and operation, Viscous Fan Is viscous unit operating correctly? NO - See Repair, Viscous coupling YES - Continue.
2. Is thermostat correct type and operating? See Repair, Thermostat If problem is not diagnosed: Continue.
3. Are the air conditioning fans operating continuously? YES - See Electrical Trouble Shooting Manual. 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.