Hello Kappafreunde, year 05/99 I now have 185000km on the speedometer. For a long time, especially in the 3rd gear, at 1800 rpm in sliding mode, an undisturbed engine run came. There followed then increasing starting difficulties. Finally, after 200km of motorway drive the speedometer fell abruptly to zero, appeared in the display: engine control unit defective. To the stop the Kappa also did not want to start, then then 10 minutes later surprisingly nevertheless to start again. ia workshop replaced the OT sensor. Now the engine no longer pulls out. Where I was able to accelerate earlier in the 5th gear of 1000rpm this is now no longer possible in the 4th gear. Only the 3rd gear accelerates halfway from 1000rpm to the top. At 2300 the turbocharger uses then, however, then at 2800rpm a tough genuine is called again. Two further workshop visits did not bring any success. Supposedly, the turbo has nothing, the air volume meter is also O.K. There will also be Does anyone have an idea?