I have a 2009 A Class Motorhome based on a 3.0 Ducato.
I have had an intermittent stutter/misfire that shows no fault codes or anything on live data.
I am going to send the ECU off for testing and repair if found to be the culprit.

My problem is access to the engine bay which is very limited. I have removed the 2 nuts securing the cover over the ECU but I cant see how it comes out.

I would be grateful for a little advice on what is securing it in place.

Many thanks.

Hi

What are you using to interrogate the ECU?

Plenty of kit out there doesnt work well on FIAT engines

I have used Multi Scan for the live data, Delphi and Wurth WOW. No codes stored and all live data is good.

All sorted now. 3 bolts securing the plate that the ecu is mounted on. Pulled clear of air filter and disconnected main terminals.

Lets hope that fixes your issue

An update on the ECU ISSUE.
I sent my ECU to a company called ECUTESTING.COM. They said the ECU was faulty and not repairable and would I like it disposing of. I asked for it back but they have ruined it and it can no longer be accessed.

I have fitted a brand new ECU and the problem still remains and it actually seems worse.
The misfire seems to have a pattern whereby in occurs every 4 or 5 seconds as if something is cycling or opening and closing causing the splutter.

I am nearly at my witts end with this. Any suggestions are very welcome.

Egr valve or injectors playing up?

And so the map and maf values looks like you'd expect them to be

Also, check the throttle body. I had issues months before it finally died and gave an error code. Maybe record the issue/sound the engine is making and post it somewhere.