Re: 166 fuel guage
I've had a variant on this problem but it's so strange I wonder if I am imagining it!
On long journeys abroad where I have been running on cruise control for some time, the computer shows a rapid fall in the 'mileage left' in the tank and the fuel gauge falls fast too. I was concerned that something as wrong as seemed to be using too much fuel. Filling up, the tank was far from empty, I brimmed the tank but the gauge sat on empty. A few miles further on with cruise control off, things went back to normal. It has now happened a few times, always associated with long distances on cruise control.
I can understand why the compuer may be screwed up but I would have thought that the fuel gauge is independent of the computer system. I have put it down to Alfa electrics.