fuel filter replaced , a bottle of Wynns extreme fuel system cleaner thrown in. finally got some charge in the old laptop and codes read as below. decided to concentrate on Lambda 1 top. unplugged it to discover some "greening" on the contacts , looks like it has had some moisture at some point. used contact cleaner , wire wool & wet and dry to clean contacts. The value before the cleaning was around 1.5V and after 3.3 as below.
Before faults were cleared i was getting a claimed 28-29mpg , is now on 39-41 !! i know its not accurate but must have made some difference to get those figures. 30 miles later i get the light and buzz, only 2 faults (not pictured) Lambda 1 above cat and another which i think was mixture. Car runs better than ever, does this actually point to duff Lambda or something else - before i spend £100 un necessarily.
on another note i get a lot of "interference" when the brake pedal is pressed, im guessing a short or bad earth somewhere, any ideas where to start please ?