volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Water Pump > < Thermostat Housing, Engine Cooling|Specifications|Page 1290
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Thermostat Housing: Service and Repair

Engine coolant thermostat housing, disassembling and assembling 

1. Thermostat housing
2. 10 Nm (7 ft lb)

3. Coolant thermostat

Installed position: breather slot/valve uppermost
Checking: Heat-up thermostat in water

Opening starts approx: 80°C
Ends approx: 105°C
Opening lift: 7 mm minimum

4. Connection
5. 10 Nm (7 ft lb)

6. O-ring

Replace

7. Connection

8. A/C Cut-out Thermal switch -F163-/Third Speed Coolant Fan Control Thermal switch -F165-

Brown, 4-pin
For vehicles with A/C.
Vehicles w/o A/C are plugged

9. Engine Coolant Temperature (ECT) sensor -G62-

Blue, 2-pin
For Motronic system
Checking, refer to Powertrain Management - Computers and Control Systems.  See: Powertrain Management/Computers and Control
Systems/Testing and Inspection 

10. After-run Coolant Thermal switch -F95-/Engine Coolant Temperature sensor -G2-

Yellow, 4-pin
Checking. 

11. Retaining clip

Ensure proper seating

Water Pump > < Thermostat Housing, Engine Cooling|Specifications|Page 1290