Vehicle cooling system Audi 80 B3

Engine cooling system. General information
The cooling system is sealed and consists of a radiator located in front of the engine (4-cylinder engine) or to the side of it (5-cylinder engine), water pump...

Water pump/coolant thermostat
4-cylinder carburetor engine 1 - cooling system hose To the intake manifold 2 - temperature sensor switch, 10 Nm For intake manifold. 3 - connection nipples 4...

Possible malfunctions of the engine cooling system

Removal, installation and checking the coolant thermostat
Removal Place a container under the thermostat housing flange. Unscrew the thermostat flange "2", drain and collect the coolant. Remove the coolant thermostat....

Removal and installation the coolant pump
Removal Drain the coolant. Remove the regulator. Loosen the V-belt pulley mounting bolts. Remove the V-belt. Loosen the coolant hose clamps. Remove the hoses....

Checking the electric fan switch sensor
The sensor must be checked if the fan does not turn on when the engine is warm. First, check whether the thermostat, radiator, and expansion tank cap of the...

Removal and installation the radiator
Removal Remove the radiator grille. Drain and collect the coolant. Disconnect the electrical plug from the thermal switch on the side or bottom of the radiator...

Checking the cooling system
Leaks in the cooling system and the operation of the safety valve in the cap can be checked using the VW 1274 device. Install the device on the filler neck of...

Checking the fan switch device when the engine is not running
The petrol engine with injection has the ability to turn on the fan when the engine is off, to cool the injection valves, which improves the hot start mode of...

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80(B4, 1991-1996)

80(B3, 1986-1991)

80(B3, 1986-1991, petrol)

80(B2, 1979-1986)