307 Feline 2.0L Petrol - Tiptrônic - RPM going down after accelerate

[MVGuerra]

Dear Friends,

I have one Peugeot 307 2.0L Tiptronic 2007 , Feline Model - 33.000 KM and my car is cutting down(Engine die) sometimes, after I accelerate.

I can notice that the problem happens more while engine is cold. In exemple, in the morning I start the engine, pass gear to "D"... I release break pedal...the car start to move and sometimes engine cut's down without I touch the accelerator pedal.

During day, with engine at correct temperature, I can see that removing car from "inercia"(stopped position), RPM goes down and I can feel that engine almost cut down and sometime it really cut down( in the midle of crossing street).

With 30.000 Km I chenged spark plugs, air filter, gasoline filter and engine addimission intake air cleaning( It was not so dirty).

I have PP2000, but I couldn't see no failure related to this problem on program. related to engine only "alternator communication fault"

Anybody have an Idea?? What can be monitored on software??

Thanks in advance,

Marcelo Guerra