Rover Metro 100 failed emissions.

Dec 13, 2004 2 Replies
B

Hi all,



I am posting this on behalf of a friend whos having a bad time with garages and her Metro.



MOT garage reports emissions failed; Fast idle CO @1.44%, should be 0.3% max allowed. Natural idle test passed. 0.13%, 0.75% max allowed.



She was then told by this garage that they could not fix the fault because they did not have the correct equipment. Off she then went to a local Rover gargage were a 'Microcheck' was run on her engine. This says, "Inlet air circuit default - Fail". The guy behind the counter says, "Catalytic converter needs changing."



Now, this seems to me to stink !! :)



Can anyone shed any light on this "Inlet air circuit" ???? If air flow to the engine was being reduced ofcourse there would be more CO in the exhaust. Isn't this why garages do not perform emissions testing with cold engines?



Sorry for the long mail. Cheers all, Bob.


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T

sorry but I am no mechanic - BUT cannot understand why a circuit fails why a CAT should be changed (surely the circuit needs to be changed also or is that 2 simple)

I have been advised that to get an "iffy" car to pass the MOT is an "Italian" service - by this I mean a long/hard trip (20 miles at least) and in high revs/lowe gear (once the engine is warm) - also get the best petrol - shell/ BP not supermarket/Tesco

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B

Exactly what I thought. Also, a lack of air (IE during cold engine startup) would also produce the same high CO content. CAT's are for NOX.

I will find out what my friend ultimatly had done to her car and get back to you on this.

Best regards, Bob.

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