147 JTD MJET Performance Trouble!
I have a 16V MJET (140), it's done 30,000Miles and has been an absolute joy to drive up until the last few months. The first 'glitch' I noticed felt like a missfire on hard acceleration, which I though may just be mucky diesel. Then performance seemed to be dropping, but only by a very small amount. Recently things have got much worse! The car now stalls if I try to pull off in 1st in the morning without lots of revs, in 6th gear it does not have enough power to stay at 65MPH or above!!! In other words I have to drive down the motorway in 5th! The torque curve would look more like a mountain range now! No power below 2000, a sudden burst from 2K to 2.5K and then nothing until 3.5K and then a very low level of power...lots of revs no additional power from there to redline.
I took the car in to be fixed and had it serviced. I must say that the turbo is spinning up fine but the alfa technician was convinced it was a faulty turbo so it got replaced. Once replaced there was a noticable increase in driveability but certainly not back to where it used to be. I had it serviced thinking it just needed a nice clean air filter...no difference. This week its gone back to its worst level ever....absolutely bugger all power! It is going in on saturday and they have it for FOUR days! Lets hope the figure it out....I am concerned though as replacing the turbo was obviously not the solution but the mechanic was convinced it was that. The examiner computer is showing no faults! I'm thinking its either MAS problem or a fuel delivery fault.....ANY IDEAS.