TD5 was making a terrible sound the other day and after telling everyone who would listen, just how well I had this thing sorted.
Got under it and heard it down near the gear box.
Great, here goes $2000.00 .Next day had a better look and took a large screwdriver under the car as a sort of steathiscope.
Long story shortish. Turned out to be the vibration damper was loose. (the one near the hand brake drum.)
15 mm socket and half a turn to tighten it up and all is good.
Now these are the sort of repair bill costs that I like! Whew!