volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Thermostat, Engine Cooling|Specifications|Page 2088 > < Thermostat, Engine Cooling|Specifications
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Thermostat: Diagrams

Thermostat Housing, Assembly

1  - Thermostat housing

with hose connection to upper radiator

2 - 10 Nm (7 ft lb)
3  - Thermostat

-

checking: heat thermostat in water
-

opens at approximately 8O°C (176°F)

-

closes at approximately 105°C (221°F)

-

stroke min 7.0 mm (9/32 in.) 

4 - Cover

with hose connection from lower radiator 

5 - 10 Nm (7 ft lb) 
6  - O-ring

replace 

7 - Cover

with hose connection to pump for coolant run-on 

8 - Plug

-

for vehicles without air conditioning

-

plug is replaced with temperature sender for vehicles with air conditioning 

9  - Temperature sender switch (G21F87)

-

yellow

-

4-point

-

for coolant run-on

-

checking,  See: After-Run Coolant Pump/Testing and Inspection

-

switch temperatures

on: 1O1-107°C (214-225°F) 
off: 94-1O0°C (201-212°F)

10  - Sender for coolant temperature (G62)

-

blue

-

2-point

-

for motronic

11  - Mounting clip

Thermostat, Engine Cooling|Specifications|Page 2088 > < Thermostat, Engine Cooling|Specifications