I own a 2003 JTD 115bhp on 80k miles & do all my own servicing & repairs.
(Have recently done timing belt, all wheel bearings, front springs, alternator, rear swing arm bushes ....to mention just a few)

Anyway I'm getting a constant dull metallic vibration from the bottom of the engine - throughout the rev range when driving or idling & I had been thinking all possible things from a knackered engine mount at the good news end of the scale to big-end bearings at the severely bad news end of the scale. This was not easy to pinpoint but It turns out & very thankfully - that its just a humble worn driveshaft support bearing (the bearing at the midway point on the drivers side driveshaft which is incorporated into the R.H rear engine mount) - when I grab the drivshaft from below & hold onto it - the noise goes away completely & when I let it go again - I can see it, hear it & feel it vibrate - so I know for a fact that this is the problem.
Anyone done one of these before? - Also I hope this thread might help someone else - because you could easily throw money at this
nasty sounding vibration replacing many things before arriving at the root cause - so do let me know if any one else has came across this.

Do i replace the whole driveshaft? (seems excessive) or can I just do this bearing?

Really really helpful, this forum, looks like if you're not in the 'In crowd' you dont get any answers........

Your thread's had plenty of views but no response, perhaps no one has ever done what your asking?

Don't expect any real help though, with remarks like that...

From memory is there a bearing there. I had to remove the driveshalf when i replaced my alternator but dont remember a bearing in that carrier.

But surely you wouldnt get a rattle on tick over only when driving????

Ok stand corrected and it appears that you will need to replace the whole support i think looking at epr, It doesn't seem to list the bearing separately

OP doesn't seem too impressed with us, so I doubt he'll be back, but for anyone else reading this thread.

The bearing is attached to the right side outer driveshaft. It's not available seperately from Fiat but may be available from a specialist bearing company from it's dimensions.
.

Ha i wasnt looking at the right bit Doh!!!

Still might have to pull the ruddy thing out at the weekend to have a look at the alternator.

O.k Agreed, my earlier remark was a bit stupid - borne out of frustration.
Anyway I Got the bearing no probs from bearing services -after I'd got the old one out & identified it -the number is on the outer shell - Confirmed that It was the bearing that was causing the rattle, (totally shot) - the noise was loudest at tick over because the torque load whilst driving seemed to dull it down. - after changing bearing no noise at all.