Hi i have a 1990, 90, 200 tdi defender and the problem is if im driving along at say 60-70 mph and let off the throttle i get quite a sever vibration if i push the throttle again it gos so i surpose its on (over run) i checked the uj,s and found some play in the frount one on the front prop so changed that and its still the same. it has had a new rear prop so i can rule that out. any ideas as to what it could be as im starting to worrie that its going to be expencive:doh: