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My wifes v6 cabby failed on emissions, lamda is ok but the co2 failed at 0.47% and the max allowed is 0.30%,exhaust and cat where new 6 months ago,car dos;..nt smoke or burn any oil.
Has anyone any ideas as to what might cause this.
Assuming that the lambda and fuelling is correct then a faulty or not properly warmed up cat. i.e. the cat wasn't workign correctly.
It can happen. Was it an OE cat or a sports cat? Sports items require patience and to be properly warmed up. Find out if they did the short or long test.
It's CO btw, not CO2
Cheers'en, AndyC
1994 ABY Coupe - Projekt Alpinweiss
This happened to me last year, so I put a bottle of strong engine cleaner into a 1/4 full tank (this isn't 'recommended' by experts, but Audi's are bomb-proof), took the car for a blast, and it passed 4 days later.
Trust me, you don't want what is referred to as an "italian tuneup" on your car:
Maybe I should refer to this as "Saudi tuning" instead - fuel is cheap, the more the better.
And yes, I read this off a car. Owner complained about excessive fuel consumption
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0-200km/h 9sec
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