hi all,
for about a month or so i'm facing the following issue: after the engine warms up, the engine sometimes (randomly) doesn't want to accelerate even though i have the throttle pedal pushed all the way, either it accelerates really slow, going from 1200 RPM to 2000 RPM in 5 minutes time, or it just starts dieing and i have to switch to lower gear. When this happens like i said i either have to switch to lower gear, get it to about 3500 RMP and then switch to upper gear or i have to push the clutch and accelerate to 4500-5000 RMP and then release the clutch to get it above 2000 RPM when the turbo starts and i get some power. When i do this i leave a big cloud of black smoke behind. It also happens that after it manages to get passed 2000 RPM sometimes the RPMs go up really fast but the car it not moving accordingly, like the clutch is slipping, but i had it replaced about 5000 KM ago (disk, plate and pomp).
Any ideas?

Did you try disconnecting the MAF-sensor?
Either that or EGR comes to mind.

gr J

could you please tell me where the MAF sensor is located? a link or picture? thanks

I don't drive a JTD anymore, so can't take a picture, but I'm sure you could find pics with the searchfunction.
It's in the pipework frontleft near the batterytray.

gr J

My guess would be EGR is stuck open, common problem that's easily solved.

Have a read of this.
https://www.fiatforum.com/stilo/293399-egr-valve-problem.html