Description And Operation: 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. For additional information, refer to: HEATING AND VENTILATION -- XK/X150 .
  • The throttle body.
• Cooling for:
  • The engine oil cooler. For additional information, refer to Engine - 5.0L, Vehicles With: Supercharger ENGINE - V8 S/C 5.0L PETROL -- XK/X150 , or Engine - 5.0L Vehicles Without Supercharger: ENGINE - V8 N/A 5.0L PETROL -- XK/X150 .
  • The transmission fluid cooler. For additional information, refer to TRANSMISSION/TRANSAXLE COOLING - V8 N/A 5.0L PETROL/V8 S/C 5.0L PETROL .

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.