I am relativelly new to sccoby ownership and have a MY00 UK turbo. It is idling quite lumpy when cold and it seems to have increased fuel consumption. I changed the MAF sensor last week with no joy.

Does this sound like the lambda sensor? I have not had any CEL come on. Could this be the symptons of something else?

Thanks in advance.

 

If the MAF sensor hasnt helped at all my guess would be it is the lambda sensor thats causing the increased fuel usage and lumpy idle.

One way to be sure is ask someone nicely if you can borrow theirs for a short while to see if it makes a difference. Or if your handy with a volt meter and can find the pin inputs to the ECU you can check what voltage your getting from the sensor and see if its in the correct range, around 0.8-0.9v iirc. When my lambda went goosed it was reading a constant 0.2v!