Hi All, i recently purchased a 1989 250TD which has a real bad vibration which resonates through the whole car. It happens between 20mph and 40mph on light accelleration or decelleration. I thought it was the diff but after further investigation on a lift i noticed the engine mounts are quite soft and the driveshaft could be out of balance. The diff seems to be OK. Could these things cause such a problem? Anybody else had similar issues? Thanks for any replies.