Cooling system components (on engine), assembly overview
WARNING: This page does not describe the selected car, but rather 15 other vehicles, including the 2006 Volkswagen GTI, 2005 Volkswagen Jetta, 2005 Volkswagen GTI, 2004 Volkswagen Jetta, and 2004 Volkswagen GTI. However, it is still accessible from the selected car via links, so may be relevant.
1 - 15 Nm
2 - Toothed belt
- Mark direction of rotation before removing
- Check for wear
- Do not kink
- Removing and installing, tensioning, refer to Toothed belt, removing, installing and tensioning
3 - Coolant pump
- Check for ease of movement
- If damaged or leaking replace completely
- Removing and installing, refer to Coolant pump, removing and installing
4 - O-ring
- Replace
5 - Coolant thermostat
- Checking: Heat up thermostat in water
- Opening begins approx. 87 ° C
- Ends approx. 102 ° C
- Opening lift min. 7 mm
6 - O-ring
- Replace
7 - Connecting piece
8 - To heat exchanger
- Coolant hose connection diagram, refer to Coolant hose connection diagram
9 - O-ring
- Replace
10 - Connector
- 4-pin
11 - Engine Coolant Temperature (ECT) Sensor G62
- With Engine Coolant Temperature (ECT) Gauge Sensor G2
- For engine control module
- If necessary, release pressure in cooling system before removing
- Checking
12 - Retaining clip
- Check for secure seat
13 - Upper coolant hose
- Secured to radiator with a retaining clip
- Ensure seated tightly
- Coolant hose connection diagram, refer to Coolant hose connection diagram
14 - Lower coolant hose
- Secured to radiator with a retaining clip
- Ensure seated tightly
- Coolant hose connection diagram, refer to Coolant hose connection diagram
15 - Oil cooler
16 - From heat exchanger
- Coolant hose connection diagram, refer to Coolant hose connection diagram
17 - Lower coolant line
- Coolant hose connection diagram, refer to Coolant hose connection diagram
18 - 10 Nm
19 - Cap
- Check using cooling system tester V.A.G 1274 and adapter V.A.G 1274/9
- Test pressure 1.4 to 1.6 bar positive pressure
20 - Seal
- Replace if damaged
21 - 10 Nm
22 - Expansion tank
- Perform cooling system leakage test with cooling system tester V.A.G 1274 and adapter V.A.G 1274/8.
23 - To turbocharger
- Coolant hose connection diagram, refer to Coolant hose connection diagram
24 - 15 Nm
25 - To top coolant hose
- Only engine code AWP with automatic transmission
- Coolant hose connection diagram, refer to Coolant hose connection diagram
26 - After-run coolant pump V51
- Only engine code AWP with automatic transmission
- Coolant hose connection diagram, refer to Coolant hose connection diagram
- Checking, refer to After-Run Coolant Pump V51 , checking
27 - From turbocharger
- Only engine code AWP with automatic transmission
- Coolant hose connection diagram, refer to Coolant hose connection diagram