Hey all. I have an 01 x5 4.4 and i'm getting this stutter from about 20 to 30 mph if i dont raise the rpms above 2k. Could this be a bad transmission sensor for 3rd gear or something? If so do i have to rip apart most of the trany to get to it? When i switched to sport mode i could'nt duplicate the stuttering. Any ideas would appreciated. Been trying to figure this out for weeks. Thanks!