Originally Posted by Stu @ M Developments
Why has nobody come up with what is probably, 95% certainly the simplest and correct answer.
This is about what you will get if you probe a car with a fully warmed up and active CATALYTIC CONVERTOR fitted.
Totally pointless reading a car with a catalyst unless its to ascertain that its working, which this one seems to be. lol
I don't understand Stu
I didn't think catalytic converters changed the lambda reading, only removed the CO and HC
even if it had a huge exhaust leak,
there is not a gas analyser on the market that can read as far as lambda 2 .....
or is it different with oxygen sensors in the exhaust, does the cat remove oxygen?
I don't know about that, only about gas analysers..
(If so, then the idle lambda should be measured with a gas analyser not an oxygen sensor)