Driveshaft or diff *clonk*

[Ruairidh Dunford]

Geoffrey,

Lie under the car and work your way down the drive chain starting with the front of the propshaft back to the torque tube.

Hold each part and move it up and down, looking for free movement, the source of the clunk will become apparent quite quickly.

If you find no movement, come back and I can suggest another potential source of the noise.