Engine Cooling - Overview (G1772502): Overview

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.

    Refer to: Heating and Ventilation Description And Operation .

  • The throttle body.
• Cooling for:
  • The engine oil cooler. For additional information, refer to:Engine V8 N/A 5.0L Petrol Description And Operation

    Engine V8 S/C 5.0L Petrol Description And Operation .

  • The ATF (Automatic Transmission Fluid) cooler.

    Refer to: Transmission Cooling Description And Operation .

The primary components of the engine cooling system are the:

• Coolant pump.
• Thermostat.
• Radiator.
• Electric cooling fan.
• Expansion tank.
• Engine oil cooler.
• Outlet tube and heater manifold.
• Connecting hoses and pipes.

  Auxiliary radiator(s) are installed on some vehicles to increase the engine cooling capacity: Two radiators on all 5.0L vehicles in the hot market; one radiator on 5.0L S/C vehicles only, in all other markets.

  In cold climate markets, an optional block heater is available as a dealer fit accessory. The block heater is located in the cylinder block and is connected to a power supply via an external plug.