Intake manifold (Audi A6 C4)

Table of contents: Removal ↓ Installation ↓

Elements of the upper section of the intake manifold on the AAR, AAN engine

1. Throttle position sensor
2. Mounting bracket
3. Connection connector
4. Electronic control unit
5. Connection connector
6. Mounting bolts
7. Throttle body
8. Blow-off valve
9. Idle speed system switch
10. Gasket
11. Mounting bracket
12. Clamp
13. Screw
14. Temperature switch
15. Intake manifold
16. Oxygen sensor connection connector
17. Connector for connecting the heating element of the oxygen sensor
18. Vacuum hose
19. Oxygen sensor
20. Signal lamp

Elements of the lower section of the intake manifold on the AAR, AAN engine

1. Hose from the fuel distributor
2. Banjo connection bolt
3. Connection connector
4. Cold start system valve
5. Gasket
6. The pipe going to the fuel distributor
7. Connecting nut
8. Injector
9. Sealing rings
10. Retaining ring
11. Insert
12. Lower section of the intake manifold
13. Air hose
14. Injector holder
15. Idle speed control valve
16. Mounting bracket
17. Coolant temperature sensor
18. Compaction
19. Exhaust elbow

Air damper elements on the intake manifold (aDR engine)

Removal

1. Remove the throttle body.

2. On ADR engine (Motronic 3.2) remove the fuel manifold and disconnect the water pipe (A) and the hose from the expansion tank (B) located above the intake manifold.

3. Disconnect the vacuum and air hoses from the intake manifold. Disconnect the connection connectors.

4. Remove the accelerator cable fastener from the upper intake manifold and disconnect the hoses and wires from the choke if necessary (See Fig. Upper Intake Manifold Components on AAR, AAN Engine and Choke Components on Intake Manifold (aDR engine)).

5. On the AAR engine (KEIII Jetronic) remove the upper section of the intake manifold.

6. Gradually loosen the mounting bolts and remove the intake manifold or its lower section (See Fig. Elements of the lower section of the intake manifold on the AAR, AAN engine).