Field Remedy: 2606

Remedy:

In case of customer complaint check the function of the switch-over 
actuator from intake manifold.

As a first diagnosis hint the switch-over actuator from intake 
manifold can be checked with a short test. 

One mechanic should observe the function of the switch-over actuator 
intake manifold; 

a second person must push the accelerator pedal very quickly. 
During acceleration of the engine to 5000 RPM the switch-over function 
should be activated.

Note: If the engine speed increases not very fast 
      (means the accelerator pedal gets pushed down slowly)
      the intake manifold switch-over function will not be activated.

A18XER/ Z18XER:

If the switch-over activator does not react, the intake manifold 
has to be replaced.

A16XER/ Z16XER:
On this engine variants it is sufficient only to replace the vacuum 
actuator.

Part-/Catalogue-Number: 55 568 437 / 8 50 266

Prior replacement of the intake manifold perform an actuator test with
TECH2 or MDI in case of doubts about the diagnosis result.

Labour Times:                            TC:            Hours:

U3 260 60      Check switch-over         90             SA
               actuator and if  
               required replace                           
               intake manifold

The costs for this repair will be covered during the normal warranty.
The regular warranty procedure will apply.