Hi all,
I have had my cars yearly MOT test and the emmisions test is failing badly!
The CO is reading at 3% - the maximum it should read is 0.3%!
First thing I will check is the lambda, but I also want to check the water temp sensor.
Do you have any tips on how to do these, A member on alfa155.org told me to measure the lambda in ohms, and if it is above 4 ohms then replace it
but I have also read that I can measure the voltage of it when at 2000rpm, I will try this tonight.
Does anyone know the resistance of the water temp sensor when working?
Also, does a series 1 Q4 have a CO adjuster in the engine bay, anyone have a pic of it?
Thanks for your help,
Jack
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