Hello together, have the honour to repair my father’s car. He bought this again 30 years ago. km Stand 51TKM The speed varies sporadically from 1000 -2500 rpm. Previous had been battery defective in winter, was renewed, then the engine control lights light up from time to time. Now the MKL remains out of it the speed fluctuations. MKB is PM with 3 ways Kat without cold running regulator or the like. In the factory saddle he was already, they can not find the error. On the one hand: A Monojetronic is installed, has now renewed the injection flange and the throttle valve adjuster. Same behavior. The throttle valve adjuster is therefore controlled the speed fluctuations, false air is excluded. The temperature sensors on the water flange and the Lambda probe have been tested. No change. I change the Monojetronic next week by testing, had no hose clamps with it today. Does anyone else have an idea VG josi