Cooling System: Description and Operation

The cooling system, which consists of a radiator and coolant recovery sub-system, cooling fan, thermostat and housing, and coolant pump and drive belt works to maintain engine temperature at an efficient level during all engine operating conditions.

Coolant is drawn from the radiator by the coolant pump and circulated through coolant jackets in the engine cylinder block, intake manifold, and cylinder heads. It is then directed back to the radiator.

The system directs some coolant through hoses to the heater core to provide defrost and passenger compartment heat. A coolant recovery reservoir is connected to the radiator to recover coolant displaced by expansion. As the engine cools, the coolant is drawn back into the radiator by vacuum.