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Author failed MOT
Behr
Member
Registered: 5th Feb 07
Location: Hemel Hempstead
User status: Offline
17th Jul 07 at 15:24   View User's Profile U2U Member Reply With Quote
on

001 (co high on fast idle) exhaust emissions carbon monoxide content after 2nd fast idle excessive.

CO

Limits = <=0.2%

Actual value = 0.52%

any ideas how to get this down?????

Any help is appreciated
corsasriboy
Member
Registered: 23rd Mar 07
Location: leicestershire
User status: Offline
17th Jul 07 at 15:27   View User's Profile U2U Member Reply With Quote
may be catalytic convertor?mine was at 0.7% or something like that!only £70 for a new cat if u fit it yourself.
Behr
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Registered: 5th Feb 07
Location: Hemel Hempstead
User status: Offline
17th Jul 07 at 15:30   View User's Profile U2U Member Reply With Quote
ive just put a brand spanking new cat on their
Superlite Ltd.
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Registered: 9th Jan 07
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17th Jul 07 at 16:00   View User's Profile U2U Member Reply With Quote
is it burning oil?
Behr
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Registered: 5th Feb 07
Location: Hemel Hempstead
User status: Offline
17th Jul 07 at 16:36   View User's Profile U2U Member Reply With Quote
no
i think it might be a dodgy cat
Superlite Ltd.
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Registered: 9th Jan 07
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17th Jul 07 at 16:57   View User's Profile U2U Member Reply With Quote
sorry burning oil would give high HC

(like mine)
Schlumpfy
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Registered: 2nd Apr 07
Location: Stourbridge, West Midlands
User status: Offline
17th Jul 07 at 20:23   View User's Profile U2U Member Reply With Quote
What condition is the air filter in? Is it dirty/blocked?
Behr
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Registered: 5th Feb 07
Location: Hemel Hempstead
User status: Offline
17th Jul 07 at 21:24   View User's Profile U2U Member Reply With Quote
shouldnt be but i will clean it tho cheers
Dan295
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Registered: 9th Oct 06
Location: London
User status: Offline
17th Jul 07 at 21:30   View User's Profile U2U Member Reply With Quote
my old cat, fell apart, if it has a slight rattle from the cat, it will most likely be that
ed
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Registered: 10th Sep 03
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17th Jul 07 at 21:58   View User's Profile U2U Member Reply With Quote
Or the lambda sensor or something is fooked.
Behr
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Registered: 5th Feb 07
Location: Hemel Hempstead
User status: Offline
18th Jul 07 at 07:32   View User's Profile U2U Member Reply With Quote
lamda reading was fine though its passed on everything except the CO reading
ed
Member
Registered: 10th Sep 03
User status: Offline
18th Jul 07 at 07:53   View User's Profile U2U Member Reply With Quote
No, the cars lambda sensor which regulates the ammount of fuel that goes into the engine.

The lambda reading is done using a probe in the exhaust on an MOT test.
Behr
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Registered: 5th Feb 07
Location: Hemel Hempstead
User status: Offline
18th Jul 07 at 08:00   View User's Profile U2U Member Reply With Quote
ahh kk how do i check if thats working tho?? or just buy a new one swap it out and hope for the best?
ed
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Registered: 10th Sep 03
User status: Offline
18th Jul 07 at 08:06   View User's Profile U2U Member Reply With Quote
Well, it's only a guess as there are other sensors too which sould be at fault so it's only an example. Best bet might be to take it to a mechanic, especially if its just had a new cat fitted.
Behr
Member
Registered: 5th Feb 07
Location: Hemel Hempstead
User status: Offline
18th Jul 07 at 08:07   View User's Profile U2U Member Reply With Quote
kk well when i take it for the retest i'll get them to have a look. cheers mate
darkgazza
Member
Registered: 18th Jun 07
Location: Seven Kings, Greater London
User status: Offline
20th Jul 07 at 16:47   View User's Profile U2U Member Reply With Quote
try the sensors and get the cat checked out that happend to mine

 
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