MOT emissions fail

Dogtooth

Update on this one.

MORPH3US, you could be right about it having a cheap cat converter, the car belongs to a friend of mine so I don't know what sort of cat it had fitted. After putting this question on quite a few car forums, the general feeling is that the cat is faulty, I checked the lambda sensor with a voltmeter and it seems to be switching ok.

The car now has an MOT, I took it my regular MOT station after giving it a good thrash round. Unfortunately it still failed on emissions. Mr Toad is right, the emissions computer is not connected to the MOT computerised system but my tester reckons it's a matter of time before it is.

anewman

Dogtooth wrote: »

the emissions computer is not connected to the MOT computerised system but my tester reckons it's a matter of time before it is.

You could fart in it and pass the car, lol. Or attatch it to a car which would pass. It certainly wouldn't prevent unscrupulous testers passing emissions failures.