So many posts on the topic “cracking” make a completely confused!!!! Omega A, 2,oL Automatik, Kombi, Bj. 93, oil change at the HA-Diff. 8 months ago (same, sucked out and new filled up to lower edge), without any problems!! Since then I even drove about 15,000km! Suddenly I had felt a “cracking” on/in the underfloor after 8h at approx. 2°C parking, after driving off on the AB after approx. 10km. The cracking was so loud that I thought with open side window that I could get my Mitb Do not hurt and have hit accordingly with little load at traffic lights and crossings!!! Facts: – Under load came immediately after starting the crack!! – According to the feeling: at every turn of the differential, or drive shaft, a crack!! – R- as well as D (back as forward, no matter which stage) – definitely not motor, because not speed dependent!! (in stand speed increase, no problem!!!) – under load backwards (with slight pressure on the brake) after movement of the chassis also Kn acken. But only when the chassis moves! – Fully put on the brake and then step and full throttle: no problem!!! (only when the chassis moves it is there). – And then at rhytmic intervals (speed-dependent, not speed-dependent)!! So one thing is clear: No motor problem, and also no transmission technical! But: chassis! Ergo: Kardan, or Diff, or drive shafts! Who has had similar, or even the same already??? Would be great, of course, if a thatel I could save myself the “underlay” and change either the differential or the assumed drive shaft without having too much unnecessary work. Thx for Future: Willie