Vehicle cooling system Audi 80 B4

Engine cooling system
When the engine is running, the water pump constantly supplies coolant to the cooling jackets, which removes the heat generated as a result of combustion of...

Coolant — Checking the Level
Do not rely on the coolant level indicator light on the instrument panel. We recommend regular visual checks of the coolant level in the expansion tank. The...

Coolant Density — Check
To check the antifreeze content in the coolant, you need a hydrometer. Each type of antifreeze has its own specific gravity. For this reason, it is recommended...

Cooling system — leak test
If the engine is hot and the cooling system is under operating pressure, then checking for leaks is quite simple. 1. Make sure the coolant circulation hoses on...

Radiator — removal and cleaning
Removal The radiator of AUDI cars consists of two plastic tanks, light metal tubes and cooling fins. Plastic radiator tanks in cars with 4- and 6-cylinder...

Coolant Hoses — Removal
When replacing hoses, buy only original ones. Be sure to also replace the mounting clamps. 1. Drain the coolant from the system. 2. Loosen the hose clamps. On...

Coolant — Drain
1. Allow the engine to cool down to avoid burns when draining. 2. Remove the cap from the expansion tank. 3. Remove the engine splash guard. 4. Place a...

Expansion tank cap
The expansion tank cap is important for the coolant circulation system, maintaining the necessary pressure for the system by means of the valves installed on...

Thermostat — Removal, Installation and Checking
The thermostat is a device that determines when the coolant should flow through the radiator to cool. This means that it is responsible for opening the large...

Water pump — removal and installation
The circulation of the coolant in the system is provided by a water pump, the drive of which may be different for each engine model. The water pump on vehicles...

Radiator blower fan
Cars with gasoline engines are equipped with one electric radiator fan. The fan is switched on via a relay located on the relay block under No.2, by a thermal...

Radiator Blowout Fan — Troubleshooting
1. Check the corresponding resistance in the additional relay block, which is located under the instrument panel on the left. 2. Disconnect the thermal switch...

Radiator Blower Fan — Removal
The radiator fan is removed together with the rear cover. 1. Four-cylinder petrol and diesel engines. Remove the mounting bolts on the top of the rear fan...

Electric water pump for TD diesel engines
When the engine is switched off, the circulation of the coolant stops, which can lead to overheating. To avoid this situation, an electric water pump helps to...

This section is available on russian, bulgarian, belarusian, ukrainian, serbian, croatian, romanian, polish, slovak, hungarian

Share information:

80(B4, 1991-1996)

80(B3, 1986-1991)

80(B3, 1986-1991, petrol)

80(B2, 1979-1986)