Failed emisions
Discussion
Took the cerb for an MOT and it failed on emissions, both banks failed as the co2 reading was very very high, limit is 0.200 and it was somewhere in region of 0.600-0.800.
What I find annoying and disconcerting is that last year, about this time I replaced both Throttle position sensors, both cats and both lambda sensors and balanced the banks to one another using a carb balancer. After which it passed the emissions no problems.
Its not like the car has been sat doing nothing, its probably done 3-4k miles this year and has been down to cornwall (400 mile) and to france (800 miles) and generally it doesnt get used on short journeys.
Any thoughts would be helpful!
1998 - 4.5
What I find annoying and disconcerting is that last year, about this time I replaced both Throttle position sensors, both cats and both lambda sensors and balanced the banks to one another using a carb balancer. After which it passed the emissions no problems.
Its not like the car has been sat doing nothing, its probably done 3-4k miles this year and has been down to cornwall (400 mile) and to france (800 miles) and generally it doesnt get used on short journeys.
Any thoughts would be helpful!
1998 - 4.5
Edited by cerdad on Tuesday 25th June 16:58
Normally if the CO reading on any car is around 0.65% then it is an indication of a failed cat(s) if the other readings were good and well within limits.
If the ones you fitted last year were good quality ones they should have 12 months warranty. Genuine ones now have to have an EU marking to ensure compliance with rules brought in 2 years ago.
As a first step try getting the exhaust really hot to light up the cats just before it goes on the the machine - Italian tune up.
Second step, try adding some Cataclean or similar - http://www.halfords.com/webapp/wcs/stores/servlet/...
- although if it works, it almost certainly wont next year. Good luck.
If the ones you fitted last year were good quality ones they should have 12 months warranty. Genuine ones now have to have an EU marking to ensure compliance with rules brought in 2 years ago.
As a first step try getting the exhaust really hot to light up the cats just before it goes on the the machine - Italian tune up.
Second step, try adding some Cataclean or similar - http://www.halfords.com/webapp/wcs/stores/servlet/...
- although if it works, it almost certainly wont next year. Good luck.
Edited by N7GTX on Tuesday 25th June 20:12
Thanks for the replys, I will go out there tomorrow and play have a play, but TBH I spent quite a time making sure everything was 100% last time.
If in the even that the cats have indeed failed, why would they have failed prematurely. I will check the specs tomorrow, and if everything is as I left it last year, it will be interesting to postulate what has caused the failure, As the cats will only have failed as a result of over fueling so theres something a miss somewhere....
Thanks.
If in the even that the cats have indeed failed, why would they have failed prematurely. I will check the specs tomorrow, and if everything is as I left it last year, it will be interesting to postulate what has caused the failure, As the cats will only have failed as a result of over fueling so theres something a miss somewhere....
Thanks.
Yep, both can end up with garages being inspected and people's livelihoods affected.
People are always keen to say my garage does this and my car passes there and it has greater repercussions than people think.
If the garage that's being used don't know how to read the guidelines then the car should be taken to somewhere that does.
People are always keen to say my garage does this and my car passes there and it has greater repercussions than people think.
If the garage that's being used don't know how to read the guidelines then the car should be taken to somewhere that does.
Vee8ight said:
v8chimmy said:
ridds said:
Be careful what you say on here as you could get a lot of these garages into trouble.
Are you suggesting garages are making readings up?And yes, some garages do put the emissions pipe into a another car parked next to it to make sure it passes. Seen it many times in my work.
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