Description & Operation: Notes
The cooling system maintains engine temperature at an efficient level during all engine operating conditions. When engine is cold, cooling system cools engine slowly, or not at all. The slow cooling of engine allows engine to warm up quickly. Cooling system includes a radiator and recovery subsystem, cooling fans, a thermostat and housing, a coolant pump, and a coolant pump drive belt. The timing belt drives coolant pump.
All components must function properly in order for cooling system to operate. The coolant pump draws coolant from radiator. The coolant then circulates through water jackets in engine block, intake manifold, and cylinder head. When coolant reaches operating temperature of thermostat, thermostat opens. The coolant then goes back to radiator where it cools.
The system directs some coolant through hoses to heater core. This provides for heating and defrosting. The surge tank is connected to radiator to recover coolant displaced by expansion from high temperatures. The surge tank maintains correct coolant level. The cooling system for this vehicle has no radiator cap or filler neck. The coolant is added to cooling system through surge tank.