Moin, as the title already says, since last night (Sunday) after driving through the Ardennes, I have a “ghost howls” out of the engine compartment. From about 25 km/h it appears, from 55 km/h it sounds like it is “egging” and it is getting louder and louder. No matter if I’m in or uncoupled, no matter what speed and no matter what speed I’m currently in, the noise is getting louder and louder the faster I drive, it gets overtaken by the loudness even mejnen engine. An idea what it might be? Remote diagnosis blind is difficult I know. If I drive home today I will record this in the hope you can imagine something below. E: 2003’er R50, petroler / no turbo conversion cooler is new (<2 months) Servo pump & oil also new (<2 months) E2: My backlog has also been giving noises for about 3 weeks, can it be just "just" that? It is always only during the ride.