Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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.
- Intake manifold
- 10 Nm
- O-ring
- replace
- 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
- 10 Nm
- Seal
- replace
- Connection tube
- To cooler for exhaust gas recirculation
- 25 Nm
- 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
- Change -over valve for intake manifold flap -N239-
- Checking, see CHANGE-OVER VALVE FOR INTAKE MANIFOLD FLAP, CHECKING
- Vacuum hose
- To Exhaust Gas Recirculation (EGR) system
NO RELATED
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.