Legacy Sedan 2WD F4-2.2L SOHC (1990)
2. Cooling Lines
This cooling system operates in three steps depending on the temperature of the coolant flowing through the cooling circuit.
(1) 1st step ... With thermostat closed, at coolant temperature of below 76°C (169°F), the thermostat remains closed and the coolant flows through
the bypass and heater circuits. This permits the engine to warm up quickly.
(2) 2nd step ... With thermostat opened When the coolant temperature is above 78 - 8O°C (169 - 176°F), the thermostat opens and the coolant
flows through the radiator where it is cooled.
(3) 3rd step ... With electric cooling fan operating When the coolant temperature rises above 95°C (203°F), the thermometer is turned on and the
electric cooling fan rotates.
3. TURBO MODEL
(1) 1st step ... With thermostat closed, at coolant temperature of below 76°C (169°F), the thermostat remains closed and the coolant flows through
the bypass and heater circuits. This permits the engine to warm up quickly.
(2) 2nd step ... With thermostat opened, when the coolant temperature is above 76 - 80°C (169- 176°F), the thermostat opens and the coolant
flows through the radiator where it is cooled.
(3) 3rd step ... With electric cooling fan operating, when the coolant temperature rises above 95°C (203°F), the thermometer is turned on and the
electric cooling fan rotates.
(4) When the engine is stopped after high-speed operations, vapor produced in the turbocharger cooling section is delivered from the coolant flow
tank to the reservoir tank where it condenses back into water. Water is then absorbed by the coolant flow tank as the engine cools.