Hello, for some time now my 2002er (EZ 25.06.02) V70II t5 in the range of 3-4000 revolutions, especially when I give strong gas. This happens even at low speeds, but also on the train at high speed. Last weekend I had then on the highway with a kickdown and acceleration to speed 190 additionally a blink of the exhaust system warning light (motor symbol). However, that stopped again after a minute to blink. I was then in the V Olvo Werkstatt and had it read out – no error message saved. I then had an exhaust gas test done, because possibly lambda probe defective, – everything ok. As for the ruching I read in the forum of a charging pressure valve. my workshop man told me that this would be documented in case of problems in the fault memory. Is that so? can one check the part somehow for function? The throttle valve is obviously also vulnerable, I have Euro3 in appearance, so it would have to be one of the Magneti Marelli. Will also have the part cleaned once with LM cleaner. Then you want to check the candles, even though they were still found to be good at the last inspection, almost 5000km ago. what else can you check? Thanks for your tips, jojo