Really needs to
clean the fleet!
Join Date: Aug 2008
Re: Faulty lambda I think
Oh, also i was getting bad mpg.
I changed the thermostat last week, and measured up 2.97 litres for 22 miles, which was an average day going to work and back. This was 33 mpg which i was happy about - but i dont think i managed to fill up to the top, as I did the test again twice last week - it was something like 12.23 litres for 41 miles (15mpg) and tested again today - 49.6 miles for 12.6 litres (17.9mpg)
Its possible that the thermostat isnt good as it wasnt an oem part, though the car still gets hotter quicker than before.
Also, as I have been playing with alfadiag, i must be losing a few mpg's to the couple of performance runs.
But I still think thats really bad - and would make sense if the car is running rich 80% of the time. What would cause it to run rich? The only thing i can think of is a bad MAF, or indeed if the thermostat isnt good and its getting hotter than before but still not hot enough