The cooling system consists of a radiator with aluminum tubes, an expansion tank, a liquid pump, a thermostat, and an electric fan. On cars equipped with an automatic transmission, a transmission oil radiator is installed on the left side of the cooling system radiator.
The cooling system is adjustable thermostat. The thermostat controls the direction of the coolant flow depending on its temperature. Depending on the temperature, the coolant circulates either in a small circle (circulation inside the cylinder block) or in a large circle (through the radiator).
Thermostat operating modes:
- the thermostat is completely closed (the coolant circulates only in a small circle);
- middle position (part of the coolant flows into the radiator);
- the thermostat is fully open (all coolant flows through the radiator).
The thermostat on a 16-valve engine is located in a housing attached to the rear of the cylinder head. On a V6 engine, the thermostat is located under the engine cover and has two connecting fittings attached to it.
Fan - with an electric drive is located inside the casing, on the back side of the radiator, and is switched on using a thermal relay located in the outlet on the thermostat housing.
Warning: When working in the engine compartment with the ignition on, the fan may turn on.
The system is full coolant. The cooling system of Ford vehicles is filled with a coolant based on Motorcraft Super Plus 4 antifreeze, which should also be used when replacing the coolant.
With an antifreeze concentration of 40%, the coolant is functional at temperatures down to –30°C.
Note: If the coolant has been partially drained, the system should always be refilled with a mixture of 50% antifreeze and 50% water to prevent the fluid from freezing.
Warning: When draining coolant, avoid getting it on the accessory drive belt and timing belt, as this will quickly damage them.