Transfer Case or Automatic Transmission problem?
I have a question and hope you can help me with a problem I have since some month with my X3 3.0si 2007, 97k miles. When accelerating there is a vibrating noise and stuttering between 1,500-2,000 rpm and sometimes between 2,700-3,000 rpm. The problem is accelerating uphill. When the vibrating noise occurs it can be noticed that the rev counter ticks up by 50-100 rpm. After changing the transfer case oil it seemed that the problem was almost gone, but now it is back worse than ever. Any ideas would be most welcome.