INTENSE VIBRATION 727 Duster!

If your at 2300 rpm at the time it starts to vibrate while driving,then if have it i park and rev to 2300 rpm and it doesn't vibrate start looking from the drive shaft back to the diff.Raise the rear diff off the ground with jack stands,then run the care until it vibrates.Could be lots of things bent wheel.bent flange on axle bad drive shaft.Very rare that it is the transmission.:glasses7: