Hello dear V40 community! My 2.0 T has a problem! So I have already tried the search function but somehow it is somehow different with everything I have found. So now my Prob. description. – when I start it in the morning, I drive a few meters I have a stand gas between 1100 rpm and 1900 rpm. When it is warm I have the Prob. it goes down on about 800 tours and at some point it slams down on 300 rpm but then immediately rattles up on 800 tours. When driving it looks like this…….sometimes he is totally tired……sometimes he goes off like Schmidt’s cat. The Volvohänder where I was at the Insp. said only ” he would have read out the error memory but, which was empty! What I did? I cleaned the idle valve, thrush valve! Now I slowly run out of ideas…..maybe you still have one?