Is it possible to try does it works if I change TRW pump number end .....156AE to TRW 6Q0423376?

If no i think to open pumps and check components in side to change something if there are burn components..

Did you try replacing ..156 with ..376?

6Q0423376 IS JUST THE CAP DUDE!

 

http://www.ebay.co.uk/itm/Audi-A2-8Z-Bj-2002-Deckel-Verschlussdeckel-Servobehalter-6Q0423376-/291372232327?pt=LH_DefaultDomain_77&hash=item43d7236e87

 

Try:

 

6Q0423156M

 

It will fit and run just fine.

Edited 2 July, 201511 yr by sepulchrave