Clunk is definately coming from the gearbox housing (went underneith for a listen). Can't imagine what could have happened in there during a cambelt change? Would a faulty mount cause a reaction in the gear housing? Will check the mounts today in case they were damaged during engine raise/drop as it was only raised/dropped on one side.

Update:

Took it to a garage who said it was probably the mounts - so had them replace the relevant ones- expensive, but I couldn't get enough torque under the van to release the bolts to do it myself. Surprise, surprise, clunk is still there :( Now they are saying that it's normal for a clutch to make that noise (gave me some technical babble). Still got a clunky clutch but some shiny new gearbox/engine mounts. Process of elimination I guess. Can't afford to touch it again so will try driving with it for a while and see if it gets any worse. They certainly saw me coming !!!

Hi

I bought new Fiat Ducato 2.3 02/2018 and I have same problem.

When I left van in Service they told me has to be like that , but I not agree.

My question is- Did you resolve the clunch clunk in your van?

Will be great if you give to me some information

Thanks

Hi there i have a 17 plate ducato 2.3 and when im driving say at 30 mph if i take my foot off the power it clunks and same when i give it some power its a bump does yours do it

Sounds like backlash somewhere in the transmission, driveshaft joints, or even a DMF?