ford Workshop Repair Guides

Ford Workshop Service and Repair Manuals

Cooling System - New System Diagnostics|Page 2803 > < Cooling System - New System Diagnostics|Page 2801
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Thermostat: Description and Operation

DESCRIPTION AND OPERATION 

1. When the coolant is cold, the water thermostat is in the closed position and the coolant flow is limited to the:

a. Cylinder block.
b. Cylinder head.
c. Intake manifold.
d. Heater system.

2. As the engine coolant temperature increases, the water thermostat opens allowing a portion of the coolant to pass into the radiator.

Cooling System - New System Diagnostics|Page 2803 > < Cooling System - New System Diagnostics|Page 2801