Components of cooling system, engine side
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2005 Volkswagen GTI, 2004 Volkswagen Jetta, 2004 Volkswagen GTI, 2003 Volkswagen Jetta, and 2003 Volkswagen GTI. However, it is still accessible from the selected car via links, so may be relevant.
1 - Coolant pipe
- Secured to exhaust gas manifold together with heat shield
2 - 10 Nm
3 - To heat exchanger
- Coolant hose connection diagram → Coolant hose connection diagram
4 - From heat exchanger
- Coolant hose connection diagram → Coolant hose connection diagram
5 - Throttle valve control module J338
- Heated by coolant
- Removing and installing: → 24 MULTIPORT FUEL INJECTION (MFI)
6 - Cable guide
- For coolant hoses and wiring harness
7 - 8 Nm
8 - Upper coolant hose
- To top off radiator
- Check for secure seating
- Coolant hose connection diagram → Coolant hose connection diagram
9 - Bracket
- For wiring harness
10 - Lower coolant hose
- From bottom of radiator
- Check for secure seating
- Coolant hose connection diagram → Coolant hose connection diagram
11 - To cylinder block
- Coolant hose connection diagram → Coolant hose connection diagram
12 - After-Run Coolant pump V51
- Secured to cylinder block by a bracket
- Checking → After-Run Coolant pump V51 , checking
13 - Oil cooler
- Disassembling and assembling → Oil filter housing, disassembling and assembling , Disassembling and assembling oil filter housing
14 - O-ring
- Replace
15 - From cylinder block
- Coolant hose connection diagram → Coolant hose connection diagram
16 - Coolant pipe
17 - Sealing plug, 2 Nm
18 - Coolant pump
- Observe installation position
- Check for ease of movement
- If damaged or leaking replace complete
- Removing and installing → Coolant pump, removing and installing
19 - 20 Nm
20 - Belt pulley
- For coolant pump
- Removing and installing ribbed belt → Ribbed belt, removing and installing
- Removing and installing → Coolant pump, removing and installing , Removing and installing coolant pump
21 - 20 Nm
- Use Water pump wrench VAG1590/ to loosen and tighten → Coolant pump, removing and installing , Removing and installing coolant pump
22 - 25 Nm
23 - Expansion tank
- Perform leak test on cooling system with cooling system tester VAG 1274 and adapter VAG 1274/8
- Test pressure: 1.4...1.6 bar
- Observe markings → Cooling system, draining and filling , Draining and filling cooling system
24 - Seal
- Replace if damaged
25 - Sealing cap
- Check with cooling system tester VAG 1274 and adapter VAG 1274/9
- Pressure relief valve must open at a pressure of 1.4...1.6 bar
26 - Seal
- Replace
27 - Thermostat housing
- Disassembling and assembling → Coolant thermostat housing, disassembling and assembling