Long live the nice
AO Silver Member
Join Date: May 2008
Location: United Kingdom
Could well be this (I have cut and paste this from roberts aerospace who are an alfa specialist)
If your car has done 50K to 70K and the performance and fuel economy isn't what it was, then your Lambda sensor is probably wearing out or even failed completely. There's a lot of internet blah-blah about the MAF or the variator, but it's usually the Lambda. They are not designed to last more than 60K. On BMWs replacing the Lambda sensor is a service item at the 60K service, and is the same part. So why not on an Alfa? Who knows. Change it (or them on later cars) at 60K and you'll be surprised at the difference. We actually have an official Alfa Romeo dealer lambda sensor testing kit, which rather helpfully tells you what in your sensor has failed, but there's not a lot you can do about it other than replace the sensor.