Coolant temp sensor replaced today with no improvement. Next option is injectors.
I've been thinking, could the dpf be the cause? Obviously I've had ecuscan plugged in a lot recently and I check dpf every time. Seems to be clogging up quickly even though it's regenerated quite a lot of late. The clogging was at 101% recently but it also said normap clogging so I thought nothing of it. Also the regen distances have been quite short one was 150km.
Also when intaservice replaced my inlet manifold they forced a regen. About 15miles later on the M69 the can ran it's own regen cycle. I don't think it's trying to regen all the time because the turbo gauge doesn't drop like a needle & mpg is the normal kind of 2.4 poor not regen poor. But the dpf does have temprature operating parameters like my rough idle.
Could the dpf be on the brink or maybe a sensor to it?
Any experiece or thoughts would be welcome!
I'm reading spontinously the threads about the rough idle bcz I have the same problem. It's all fine till it hits the 90degree and then it start idling rough...
I really try not to listen or notice the rough idling when it hits the 90degree and as long it does't hurt my cars engine, I can't really give a damn anymore about this problem.
And if wanna sell it well as long it doesnt get to 90degree, they will not notice. I know it's not nice but the previous owner didn't said anything about it either.
I do feel sorry for guys spending so much money and the problem didn't resolve itself ... I hope your car is in warranty for that so it doesnt cost you money at all.
What I already did is bought me a new MAP sensor, I still need to change my EGR valve but I do have my previous valve cleaned out and blanked it off... Except mybe I get a direct response and the feul economy went down I didn't helpt my rough idling ...
I find it weird Alfa doesn't give a good explanation for this problem yet bcz it seems a lot of 2.4 JTD engines facing this problem...
Goodluck hopefully we will find the answer to our problems but as long it doesn't kill your engine and runs fines. I not think you have to break your head about it anymore and just put the music little bit louder on a stoplight