Intake manifold flap, servicing

When engine is switched off, the intake manifold flap is closed for approx. 3 seconds and then opens again. This reduces the stop jolt.

Checking Change-over valve for intake manifold flap, see CHANGE-OVER VALVE FOR INTAKE MANIFOLD FLAP, CHECKING .

The following list pertains to Fig 1.

1. Intake manifold 
2. 10 Nm 
3. O-ring 
   • replace
4. Intake manifold 
   • With exhaust gas recirculation valve and intake manifold flap
   • Check the change-over mechanism for the intake manifold flap for ease of movement and function
5. 10 Nm 
6. Seal 
   • replace
7. Connection tube 
   • To cooler for exhaust gas recirculation
8. 25 Nm 
9. Vacuum actuator 
   • Checking Change-over valve for intake manifold flap, see CHANGE-OVER VALVE FOR INTAKE MANIFOLD FLAP, CHECKING 
   • Do not damage operating rod when installing
10. Change -over valve for intake manifold flap -N239- 
    • Checking, see CHANGE-OVER VALVE FOR INTAKE MANIFOLD FLAP, CHECKING 
11. Vacuum hose 
    • To Exhaust Gas Recirculation (EGR) system
Fig 1: Intake Manifold Flap Components With Torque Specifications
Courtesy of VOLKSWAGEN OF AMERICA, INC.