Hello, did not find anything in the search on the topic “Rosselklappenschraube” I installed a new (used) throttle valve, because the old one was defective. When I finished and started the engine, it ran on 3000 revolutions. When I compared the throttle screw from the current throttle valve to the old one, I saw that the new one was totally wrong set. I know that you should not adjust this screw, but 3000 revolutions I find a bit much in idle je The omega runs at an idle speed of 800 to 900 U but if I hold for example at the traffic light, the speed hangs for 1 to 2 sec. to 1500 U afterwards it goes back to the normal speed range, but runs…….. (but the AU passed) The throttle valve looks like new from the inside. Opel Omega b Caravan 2.0 16v Built. 1997 Is there the possibility to adjust the throttle valve screw correctly again?