Moin, have a 850 from 1994 with B5252S engine. He dies stump off at idle, however, differently fast. Sometimes not at all. If you pull the petrol pump relay he dies slowly. Interesting is that the gas train was so tightly turned that the DK at the zero screw had almost 2mm distance which I disliked. Did it correct with the result that if you give a hint of gas from the zero position of the cars so exits. If you quickly get over this point he runs away. So fal I can run it in idle mode and also drive it (on the farm). As already mentioned, it goes out sporadically in idle mode. I measured at the pot of the flap but unfortunately no comparison car and no values. No. of the Dk is: 3507526 and the number of the pot is: 0 280 122 001. Would like to measure if it is so ok to exclude this. I have now clamped a light bulb in parallel on + and – the ignition coil. Let’s see what happens then. Vllt it is yes also the KW sensor!? Greeting Joe