Gasoline engine cooling system VW Transporter T3

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

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

Coolant — General Information
Please note: The cooling system is filled by the VW factory for the whole year with a mixture of water and WV antifreeze type G11. G11 prevents damage from freezing and corrosion...

Draining and filling the coolant
After repair work, during which the coolant was drained, it must be replaced. Liquid replacement is not provided for in the annual maintenance. Coolant must be replaced after...

Removal and installation the radiator
Note: Secure water hoses with clamps. Removal Remove the radiator grille by unscrewing the 5 vertically located screws and pulling out the grille. Drain the coolant or clamp the...

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

Checking the Thermostat
If the thermostat does not open, the engine will quickly overheat. If the thermostat is constantly left open, the engine will not reach its operating temperature. Drain the...

Removal and installation the coolant temperature gauge sensor
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 checking 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. Check condition: thermostat, radiator and radiator cap are in order. The...

Removal and installation the water pump
The water pump is located on the left side of the engine. Removal Drain the 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 shirt; 6. Cylinder head; 7. Inlet pipe (carburetor engines only); 8. Water pump; 9....

Diagnostics of engine cooling system faults
Diagnostics of engine cooling system faults

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