v50 volvo 2008 (FlexiFuel)

[damir]

Hi

I am new to this and hope to gather some more info. I have had my v50 2008 (flexiFuel) with the volvo deal for 6 times now and the problem cannot not be resolved. My problem is that my rpm counter drops to 200-400 rpm every once and a while. Whilst at the deal, the have replaced 4 injections, ETM sensor, external temp sensor located on the side mirrows, but the fault remains ever present. It is a real stress in trafic sometimes, and Volvo dealer says that this is normal, however, when I read on the web and speak with friends, this is not a normal behaviour. Does anyone have any other comments or guidens what it could be? I mean most of the major sensors and injections system has been replaced, what else could it be?? I forgot to mentionen, new sparkpluggs and ignition cabel is also replaced.

Any feedback is much appreciated.
thank
D