Any one got any ideas whether the v40 t.d uses a dampened (rubber inserted) crankshaft pulley?I have a strange vibration between 2600-2800 rpm even when revving the engine stationary,so that eliminates drivetrain faults.Engine mounts are fine,unless someone can point me in a particular area.I suspect that it is the pulley breaking up,but need to know whether it is the dampened type or not?