Cooling System: Description and Operation: Overview

Engine Cooling

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. For additional information, refer to 412-01 Climate Control.
- The throttle body.
- Cooling for:
- The engine oil cooler. For additional information, refer to 303-01F Engine - 5.0L, Vehicles With: Supercharger or 303-01E Engine - 5.0L, Vehicles Without: Supercharger.
- The transmission fluid cooler. For additional information, refer to 307-02B Transmission/Transaxle Cooling - 5.0L/3.0L Diesel.
The primary components of the engine cooling system are the:
- Coolant pump.
- Thermostat.
- Radiator.
- Auxiliary radiator (SC (supercharger) vehicles only).
- Cooling fan.
- Expansion tank.
- Engine oil cooler.
- Outlet tube and heater manifold.
- Connecting hoses and pipes.