High C02 emissions --- Maybe CAT??

[tony16v]

Hi,

I just got back from my MOT test and the car failed on the CO2 emissions...

They were well over the allowed 0.30, and I was wondering if that means that the CAT as packed up???

does anyone know what the CAT actually does??

I dont want to pay out 200 quid if its not the CAT...

Cheers Tony.

[Rich]

either that or the lambda sensor, the garage should tell you should they not?

[tony16v]

tbh mate wouldn't trust the garage... would rather ask on here cos you lot probably know more about these cars then anyone...

[northy]

if you have a decat on then the emissions will be too high and fail.

i know as ive tried....can you remove your cat and have a look iside to see if everything is well ?

what was the engine temp when they tested it ?

[tony16v]

the oil temp was above 80 when he did the test... but the car had been sat about for a while....

[Zollo]

Is this the Williams mate?

If so, not sure what it could be, as it's had quite a few of the obvious things replaced already. When it had the MoT done back in May(ish), the emmissions test was conveniantly ignored though! Perhaps linked to the occasional cold-start stuttering?

[tony16v]

no not on the williams mate.... on the turbo.

yeah, still having that cold misfire problem... but like you stay most parts have already been replaced...

[Zollo]

Nice, the turbo has risen!

Post some pictures in the media section mate

[clowo16v]

Mine failed on the CO2 emissions and it was the lambda sensor. They should be able to test the lambda sensor aswell should be about 0.99-1.03 I think.

See ya

Matt

[tony16v]

Yeah the lambda reading was 0.95 and it should have 0.97 to 1.03.....

It passed the CO2 at natural idle but not at fast idle like 2500rpm...