Moin, my popometer has been showing an occasional “jump” for some time now it seems to get worse! In the past a short gas surge was enough, now it seems to be a little bit more unwilling. Simply speeding up is only viscous when the phenomenon appears. Detach, short full throttle and everything is clear again… In the AI (Tacho) no errors are shown, in the engine control unit (Fenix) nothing is also stored! Does anyone have a tip where to start troubleshooting? and Lambdasonde (Original) have not yet run 50 km! Before about 1500km I have renewed the spark plugs (Original Volvo), a new ignition coil (Aftermarket) built in. In addition a optically very good but used original Volvo-Zündkabelset (blue), as well as a good distribution cap plus fingers. In my fundus I have still a used idler and a throttle flap lie… LG wakku