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 Heating and Ventilation Heating and Ventilation
- The throttle body.
- Cooling for:
- The engine oil cooler. For additional information, refer to Engine Locations
For additional information, refer to Engine Locations
- The transmission fluid cooler. For additional information, refer to Transmission Cooling Locations
The primary components of the engine cooling system are the:
- Coolant pump.
- Thermostat.
- Radiator.
- Cooling fan.
- Expansion tank.
- Engine oil cooler.
- Outlet tube and heater manifold.
- Connecting hoses and pipes.
Auxiliary radiator(s) are installed on some vehicles: Two on all 5.0L vehicles in the Gulf States; one on 5.0L supercharger vehicles (only) in all other markets.
In vehicle markets subject to very cold climatic conditions, an engine block heater can be installed.