I have a multiscan that I bought for my daughter's Fiat but it wouldn't connect to the Alfa - it's an OBD II, thought it would. It plugs in but the scanner kind find my ECU? Anyway, removed the air intake pipe and sprayed cleaner into the MAF - now runs sweetly again. Could be on its way out or could just have picked up some dirt?
lucky you, looks like it is only dirt.
check the intake air filter for mileage, proper fitting, and dirt, and also the intake rubber sleeve, if it has any cracks. that is to avoid it getting dirty again.
I use a vag com kkl cable and multiecuscan for error code reading.
return here if problems come back again.
Problem has returned
Plugged it in to a multiscan and it gives 3 faults
1: Lambda sensor - open circuit - intermittent
2: Lambda sensor integrator - above limit - intermittent
3: Air leakage
I'm guessing that lambda intermittent faults are a consequence rather than a cause? We can't find any obvious air leaks by ear or by squirting with WD40. Is there another way? (smoke bomb in the airbox etc? )
Only other guess is that when I initially took off the air intake in front of the MAF sensor (to spray it) I might have temporarily moved the place it was leaking from, which is why it ran OK for a few miles? So could be in the plastic pipe with the MAF housing?