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High co2 emissions
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Old 07 Oct 2008, 05:37 PM   #1 (permalink)
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High co2 emissions

Hi all, my 95 import has failed it's MOT today on high co2 emissions. It never had a cat when I bought the car but would this help ?

Any ideas or comments welcome.

thanks
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Old 07 Oct 2008, 05:50 PM   #2 (permalink)
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Re: High co2 emissions

Yes a cat reduces emissions a lot so if you fit the cat it will pass mot test
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Old 07 Oct 2008, 06:49 PM   #3 (permalink)
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Re: High co2 emissions

Yeah man i'd say stick a standard down pipe on her and you should be good to go, also i dont know if you can get a product called DIPTANE or a similar product but over here the lads put a bottle of that in with a fuel fill a few hours before the test alot of lads failed the first time put this in for the re-test and got a thumbsup.
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Old 08 Oct 2008, 07:44 AM   #4 (permalink)
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Re: High co2 emissions

They a Wynns co2 emissions reducer aswell great for nct (mot) here in Ireland
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Old 08 Oct 2008, 08:26 AM   #5 (permalink)
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Re: High co2 emissions

Thanks for the replies, just spoken to the test garage and don't think a bottle of emission reducer is going to bring it down enough. To add to this they tell me that I've got a straight through exhaust, never been under the car so didn't know this. This means that I've got nowhere to put the cat even if I had one.
Going to try to pick up a cheap or second hand standard system for the day just to get though the MOT.
Bugger !!!
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Old 08 Oct 2008, 09:30 AM   #6 (permalink)
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Re: High co2 emissions

Only replace the centre section. This cat is the less restrictive of the two cats and easy to replace.
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Old 08 Oct 2008, 09:34 AM   #7 (permalink)
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Re: High co2 emissions

Thanks Pete, I need to get under the car and have a look to see whats going on. If they are right and it is one complete section I may have to get a cat welding in place ? Don't want to do this
I'm trying to source a used system from a breaker that I can bolt on once a year. Don't see much point spending any money on this.
Chuffed it's not failed on anything else but it a pain in the arse for what it has failed on.
Just had a new Clifford fitted last week and wife is not impressed if I need to spend more money !!!
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Old 08 Oct 2008, 09:43 AM   #8 (permalink)
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Re: High co2 emissions

Fingers crossed it's in sections.
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Old 08 Oct 2008, 09:47 AM   #9 (permalink)
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Re: High co2 emissions

I'll let you know later, will be a lot easier !!
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Old 08 Oct 2008, 11:20 AM   #10 (permalink)
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Re: High co2 emissions

if you lived down my way could of got it through 4 yougood luck
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Old 08 Oct 2008, 11:25 AM   #11 (permalink)
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Re: High co2 emissions

Might be an option for me, would give me another year to sort it out. You're only about 1.5 hour drive from me.

Matt
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Old 08 Oct 2008, 05:52 PM   #12 (permalink)
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Re: High co2 emissions

Hi Pete, got the car back today and found that the system is in three sections, downpipe, centre and back section. The downpipe and the centre are straight through and the back section has a small silencer box. At the base of the downpipe the is a bolt in the exhaust, I think this is where the heat sensor goes ?
The garage said that they couldn't find the lambda sensor either but I've also been told this wouldn't do anything over 1000 rpm anyway.
On the MOT form the fast idle test was reading 4.420 for CO2 and the lambda was reading 0.893, both of which are a fail. The natural idle test was reading 1.829 for CO2, again a fail.
The exhaust is in really good condition so I don't want to spend a lot of cash on changing the exhaust for one day a year, but I've had a bit of a result. I've been speaking to RS Vehicle Imports in Kent to replace some bits and bobs and he has offered to put it through the MOT for me by bolting on the bits I need to get the CO2 reading.
I'm still a little unsure about the lambda sensor though, do I need this or not and how do I find it ?
Thanks
Matt
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Old 08 Oct 2008, 07:56 PM   #13 (permalink)
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Re: High co2 emissions

Hi Matt.

The lambda sensor is located half way down the downpipe. I dont think you need a lambda sensor for a mot.

Best ask UK Dave or Alyn Stockton for advice. (2 great guys and very helpful) I wish i could help.

Link: AS Performance - Rally Motorsport Specialists
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Old 09 Oct 2008, 07:48 PM   #14 (permalink)
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Re: High co2 emissions

just find an original centre section (with cat) for your car. there are many people out there selling off these parts especially when breaking cars. once fitted take the car for spin to heat up the cat and then get on the MOT ramp whilst the cat is still hot and get the emission test done straight away. the car should sail through. i had to this last week with my car, as my MOT friendly garage has tightened up its act. it cost me 40.00 to get the exhaust removed and then put back on by another garage. the car flew through.

Last edited by brumbrum; 09 Oct 2008 at 08:13 PM.
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Old 09 Oct 2008, 07:57 PM   #15 (permalink)
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Re: High co2 emissions

Thanks for this, I'm having this done next week.
I was hoping that there was someone in, or near, Hertfordshire that had a centre section for a wagon gathering dust in a garage but can't find anyone.
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