CORZA_2007
Member
Registered: 30th May 07
User status: Offline
|
right my car has just been for its retest and it failed on exhaust emissions again
1st time it was
fast idle test
Co 0.84%
second fast idle test
Co 0.35%
and they said get a new cat on it. I put and new cat on and changed the air filter back to standard
car retest this morning
fast idle test
Co 6.04%
HC 259ppm
second fast idle test
Co 1.58%
i would like to know how to fix this the garage now say it could be running rich
|
AdamF
Premium Member
Registered: 24th Apr 02
Location: Bexhill, East Sussex
User status: Offline
|
what engine, year etc?
have you plugged the lambda sensor back in if you had to unplug it for any reason.
[Edited on 16-01-2008 by AdamF]
|
CORZA_2007
Member
Registered: 30th May 07
User status: Offline
|
x14xe 1995
i have changed the lamba sensor recentley with a new exhaust manifold
|
AdamF
Premium Member
Registered: 24th Apr 02
Location: Bexhill, East Sussex
User status: Offline
|
just seems funny that after you have put a new cat on it, it sudenly decides to make it worse 
was the car hot when it went for the test? i would try getting it really hot when it goes back anf try again.
what was the lambda reading on the retest first and second fast idle?
|
CORZA_2007
Member
Registered: 30th May 07
User status: Offline
|
first 0.852
second 1.014
|
AdamF
Premium Member
Registered: 24th Apr 02
Location: Bexhill, East Sussex
User status: Offline
|
i would try thrashing it to the test station and ask if they can just check it to see if its ok before retesting it.
where you from?
|
CORZA_2007
Member
Registered: 30th May 07
User status: Offline
|
nr banbury oxfordshire
|
Richardhhha
Member
Registered: 29th Sep 07
Location: Croydon, Greater London
User status: Offline
|
they have done a quick mot, don't worry to much, i have got my mot today and i have a sport cat which is a git to pass, tell them why didn't they do a cat initilization test, where they rev the car at about 3.5k for 15-20 minuits, after which it should pass!
|
AdamF
Premium Member
Registered: 24th Apr 02
Location: Bexhill, East Sussex
User status: Offline
|
quote:
Originally posted by CORZA_2007
nr banbury oxfordshire
ahh not to worry then i was going to say if your close i would have checked it for you
|
swill_omnibus
Member
Registered: 12th Dec 07
Location: : S. wales Drives: Dodge Caliber
User status: Offline
|
Best thing to do is what AdamF says, just take it for a very heavenly run on the motorway if possible just before the test, preferably 70+ to get the efficency good too.
Or maybe worth doing an engine flush aswell to help the engine run more efficiently maybe?
|
TomSBD
Member
Registered: 22nd Jun 06
Location: Spalding, Lincs
User status: Offline
|
change the oil and filter
thats what i normaly do to cars that fail. then take for a drive doesnt have to be too far just hold it at 60 in 3rd and drop down the revs then give it full throttle back up to 60 again
|
Chiggs1989
Member
Registered: 7th Aug 06
Location: Dover, Kent
User status: Offline
|
thrash the nuts of it
|
Richardhhha
Member
Registered: 29th Sep 07
Location: Croydon, Greater London
User status: Offline
|
failed me mot today, cats foobared so im putting the standard one back on and standard exhaust system.... the one on there is going to be US when i ahev the let done anyhoo.
|
