Gasoline engine cooling system Volkswagen Sharan 1

Engine Cooling System — Design Description
The cooling system serves to forcibly remove heat from the engine cylinders and transfer it to the surrounding air. Engine cooling system (VR6 and 2.0L) liquid, closed type, with...

Coolant replacement
Replace the coolant in the following order: turn the interior heating control lever on the instrument panel to position «Heiss» (hot); unscrew the cover of the expansion tank. If...

Antifreeze — General Information and Precautions
Standard coolant is used as coolant (antifreeze) - a mixture of water and ethylene glycol. The anti-corrosion additives contained in the antifreeze prevent the formation of rust...

Radiator cap and radiator check
The radiator serves to remove heat from the coolant by air flow. The engine cooling system is under pressure. The radiator cap with gasket hermetically closes the radiator, but...

Removal and installation of a radiator
2.0 liter engine Remove the radiator in the following order: disconnect the terminal «–» from AB, since when the ignition is on, the wires of the electric fan are energized; drain...

Checking the cooling fan
If the fan does not turn on when the engine warms up to the set temperature, then first of all check the temperature switch located on the side of the radiator as follows: start...

Checking the temperature sensor of the remote thermometer
Disconnect the wire from the temperature sensor and connect between its terminal and «weight» ohmmeter. With a cold engine, the resistance of the sensor should be large enough....

Removal and installation of the water pump
The cooling system of the 2.0-liter engine includes a centrifugal-type water pump that ensures constant circulation of the coolant. Remove the water cooling pump in the following...

Removal and installation of the water pump of the VR6 engine
Removal and installation of the water cooling pump of the VR6 engine is laborious work. To do this, it is necessary to unscrew the bolts of the engine mounts, dismantle the engine...

Water pump repair
VR6 engine The water pump cannot be repaired, so if a malfunction is found, replace it with a new one. 2.0 liter engine The water pump cannot be repaired, so if it malfunctions,...

2.0 liter engine thermostat
Pic. 188. Pump water cooling 2.0-liter engine disassembled: 1 - bolt, 25 Nm; 2 - pulley; 3 - bolt, 10 Nm; 4 - water pump; 5 - gasket, replace; 6 - thermostat; 7 - O-ring, always a...

Engine thermostat VR6
Pic. 193. Parts of the thermostat housing and the thermostat itself: 1 - thermostat housing; 2 - a bolt with an internal hexagon, 10 Nm; 3 - thermostat; 4 - thermostat housing...

V-ribbed belt
Pic. 194. Laying the drive V-ribbed belt on the pulleys of the engine units The V-ribbed belt drives all engine units from the crankshaft pulley or from the vibration damper. It...

Coolant circulation pump
The engine cooling system has an additional electric coolant circulation pump. On the wiring diagram, it is designated as V51. The circulation pump runs constantly and also cools...

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