Measure the pressure sensor...

[Jughead]

Yoh!  Difficult question.  Unfortunately with these pumps it is very much a matter of trial and error.  I would replace the sensor to start with.

[knappen]

i replaced the whole ABS unit/pump i hade a used one...

But now i wonder how does the Bleeding work with the GS-911?  I run the software... right? But do i have to open any nipple to let the air out... if so... witch one? The ones on the wheels or on the ABS unit( witch one of the 6 ? )

[mike d]

The GS-911 Bleed test is just that. A test to see if you have any trapped air in the system AFTER you performed the physical bleed operation.

The following is just one of a number of explanations on how to perform the actual bleed sequence.

https://www.ukgser.com/technical/nick/Brake%20bleeding%20(All%20BMW%20EVO%20systems,%20%2704-%2707).pdf

Mike

[Jughead]

The GS-911 Bleed test is just that. A test to see if you have any trapped air in the system AFTER you performed the physical bleed operation.

The following is just one of a number of explanations on how to perform the actual bleed sequence.

https://www.ukgser.com/technical/nick/Brake%20bleeding%20(All%20BMW%20EVO%20systems,%20%2704-%2707).pdf

Mike

Agreed.  This is one of the best write-ups for bleeding these systems.

[knappen]

okay thanks guys for the help