159 JTDm 2.4 Lusso Sportwagon - power issues
I am on my third Alfa and love them. However, I have been having problems with my 2008 159 2.4 JTDm Lusso Sportwagon and would appreciate any assistance in diagnosing the current fault.
It started with uneven idylling and progressed to severe engine vibration and loss of power especially noticeable whilst motorway driving.
It eventually wouldn't start. A sticking EGR valve was diagnosed and this was replaced a couple of months ago.
The car now starts but still lacks power. Again, whilst motorway driving it won't sit in 6th gear. In 5th and 4th there is still significant engine vibration and lack of power. The turbo gauge shows the turbo kicking in and staying on far longer than usual - presumably to give the car sufficient power to keep going.
I am running on premium diesel and make sure the particulate filter is cleared by frequently giving the car a good blast.
Any ideas on what this could be?