Engine Cooling: Introduction

The engine cooling system maintains the engine within an optimum temperature range under changing ambient and engine operating conditions. The system is a pressurized expansion tank system with continuous bleeds to separate air from the coolant and prevent the formation of air locks. The engine cooling system also provides:

• Heating for:
• The passenger compartment.
• The throttle body.
• Cooling for:
• The engine oil cooler.
• The transmission fluid cooler.

The primary components of the engine cooling system are the:

• Coolant pump.
• Thermostat.
• Radiator.
• Cooling fan.
• Expansion tank.
• Outlet tube and heater manifold.
• Connecting hoses and pipes.