Gasoline engine cooling system VW Transporter T3

Description of the design of the engine cooling system
Note: The seals must always be replaced. All parts of the cooling theme can be removed and installed without removing the engine. All hoses are secured with clamps so that they...

Engine cooling circuit
The engine cooling system is a water-cooled system with a circulation pump and a temperature controller (thermostat). The coolant has anti-corrosion properties and can be used...

Coolant — general information
Attention: The cooling system is filled at the VW factory for the whole year with a mixture of water and antifreeze WV type G11. G11 prevents freeze and corrosion damage and also...

Draining and filling coolant
After repair work, during which the coolant drained, it must be replaced. Fluid changes are not included as part of the annual maintenance. The coolant must always be replaced...

Removal and installation of a radiator
Note: Secure water hoses with clamps. Removing Remove the radiator grille by unscrewing 5 vertical screws and pulling out the grille. Drain the coolant, or clamp the water hoses...

Removal and installation of the thermostat
The thermostat is located in a housing mounted on the water pump flange on the left side of the engine compartment. Removing Clamp both water hoses connected to the thermostat...

Thermostat check
If the thermostat does not open, the engine will quickly overheat. If the thermostat is constantly left open, the engine will not warm up to its operating temperature. Drain...

Removal and installation of the gauge of the index of temperature of a cooling liquid
The sensor is located on the side of the thermostat housing on the left side of the engine compartment. Disconnect the wire from the sensor. Unscrew the sensor. When installing,...

Removal, installation and check of the temperature switch of the electric fan
Checking the temperature switch is necessary if the fan does not turn on when the engine is hot. Test Condition: Thermostat, radiator and radiator cap are OK. The electrical fan...

Removal and installation of the water pump
The water pump is located on the left side of the engine. Removing Drain coolant. Disconnect both hoses from the thermostat housing. Disconnect the upper water pump hose....

Water hose connection diagram
1. Radiator; 2. Heater (heat exchanger); 3. Heater valve; 4. Ventilation valve; 5. Cylinder jacket; 6. Cylinder head; 7.Inlet tube (only carbureted engines); 8. Water pump; 9....

Diagnostics of malfunctions of the engine cooling system
Diagnostics of malfunctions of the engine cooling system

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Transporter T4 Transporter T3