Hi Gents,

Got me this Toyota which is on it's way to the scrap yard if it costs to much to repair! It's only failed it's MOT on emissions and according to the emissions ticket I think it's just the cat...
RPM 2840
CO 0.71
HC 191
CO2 14.25
Lambda 1.012

I decided to check the lambda sensor operation and got some curious readings/images. I remember something strange about Toyota lambda sensors can anybody out there enlighten me?

This is at a steady 2500 rpm.



There is no switching at idle speed even if you introduce an air leak!