I have a 2007 Alfa GT 1.9 JTDm.
There's a strange thing that my Alfa does nowadays. When I go to the highway, after a while at above 110-120 Km/h the car starts to lose power, motor rev starts to alternate between
2300-2500 slowly, consumption goes up above 10 l. No error is displayed on the computer, no engine failure light come up.
I brought the car to the service, and they said the problem does not come up for them. Also they have printed out the error
list from the computer - as they said - and have not seen any fault codes.
After I got back the car, the problem did not exist, and now on this weekend after some 100 km-s it came up again.
Do you have any idea what is causing this ?
I have made two videos with my camera :