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Topic: Emissions failure (Read 2595 times) |
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mindofitsown
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Emissions failure
« on: Dec 23rd, 2009, 4:20pm » |
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2.0l Ultima 16v. Took my car for MOT the other day with known blowing exhaust and legal limit front tyres. (Wanted to find out what else was wrong since if total bill too high it would write off the car).
Emission test results as follows:
Fast idle 2750 to 3150rpm
CO = 0.11% Pass (limit is 0.3%)
HC = 15ppm Pass (limit is 200ppm)
Lambda 1.13 Fail (limits are 0.95 to 1.09)
Guy said that when exhaust leak is fixed, it should then pass. Would he be correct? I can't afford to but new centre section only to find out it still fails emission test.
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tlundkvi
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Ex. Scorpio 2.9 24V -95
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Re: Emissions failure
« Reply #1 on: Dec 23rd, 2009, 5:59pm » |
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It may be the leak can be welded. Do you know how big it is? Did you get an oxygen reading as well?
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mindofitsown
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Re: Emissions failure
« Reply #2 on: Dec 28th, 2009, 7:00pm » |
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Hi, thanks. I can't see the hole because its in the top part of the centre box so can't tell if it can be welded. No didn't get oxygen reading as such but I thought that is what lambda indicated?
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scorpio_man
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Ford Kuga awd
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Re: Emissions failure
« Reply #3 on: Dec 28th, 2009, 9:07pm » |
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hi there
leaking exhausts can make the lambda reading go high, so if fixed, then yes, it 'should' pass.
a replacement, patterned lambda costs about £30 (without plug).
hth
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amigafan2003
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Re: Emissions failure
« Reply #4 on: Dec 29th, 2009, 8:15am » |
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A CO pass but a high Lambda fail does indeed indicate an exhaust leak so yes he is correct in saying if the leak is fixed it will pass emmissions.
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PJDavis
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2 x 1995 Jag X300 3.2 / 4.0 (Henley) 1957 XK140
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Re: Emissions failure
« Reply #5 on: Dec 29th, 2009, 2:03pm » |
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Amigafan is quite correct. I had the same problem with my wifes wee car, and as soon as the exhaust was replaced, (under-warranty) the lambda passed. However the engine management light did not go out, and Hyundai wanted me to go back to Dundee so they could plug it in and switch the light out! I had read on a Jaguar forum that if the battery is disconnected for more than two hours, the engine management system resets to default. So I tried this disconnection of battery and that did the trick! Hyundai didn't know this apparently, and I don't know if that would work on a Scorpio. I was also told by a Jag' mechanic that the systems 'brain' has to 'learn' your driving again...........I don't know what to make of that?
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I love 'Movvy'
1995 Jaguar XJ6 X300 3.2 (Henley)
1995 Jaguar XJ6 X330 4.0 (Dopey)
1957 Jaguar XK140 USA (converted to RHD, and to have fitted Mk10 420G Engine with BW 65 Auto Trans)
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amigafan2003
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Re: Emissions failure
« Reply #6 on: Dec 30th, 2009, 12:07am » |
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Quote:| and I don't know if that would work on a Scorpio |
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Scorpios don't have an engine check light so no worries there!
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Simmo
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Re: Emissions failure
« Reply #7 on: Dec 30th, 2009, 6:47am » |
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on Dec 29th, 2009, 2:03pm, PJDavis wrote:| . I was also told by a Jag' mechanic that the systems 'brain' has to 'learn' your driving again...........I don't know what to make of that? |
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The same thing applies to the Scorpio. It has often been said that after work on the car it should be taken for a run, over various types of roads, in order for the 'brain' to re-adjust to the numerous inputs from the sensors. 
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Ivan Pevnitsky
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Scorpio Ghia '96, 2.3, Auto
Posts: 172
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Re: Emissions failure
« Reply #8 on: Dec 30th, 2009, 2:31pm » |
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I failed MOT today too on 2500 rpm (idle test passed).
CO = 0.97 (limit is 0.60)
CH = 767ppm (limit is 200ppm)
What could be the reason?
Year ago I passed the MOT successfully.
I replaced EGR pipe 4 or 5 months ago (it was broken completely). But year ago there was a little brake and I passed MOT with broken egr pipe.
Thanks
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tlundkvi
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Ex. Scorpio 2.9 24V -95
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Re: Emissions failure
« Reply #9 on: Dec 30th, 2009, 5:52pm » |
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on Dec 30th, 2009, 2:31pm, Ivan Pevnitsky wrote:I failed MOT today too on 2500 rpm (idle test passed).
CO = 0.97 (limit is 0.60)
CH = 767ppm (limit is 200ppm)
What could be the reason?
Year ago I passed the MOT successfully.
I replaced EGR pipe 4 or 5 months ago (it was broken completely). But year ago there was a little brake and I passed MOT with broken egr pipe.
Thanks
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One year ago I fought with the same problem (but results at idle were worse than at 2500rpm). I replaced injection temp sensor, egr hoses etc. but at the end of the day the cats (I have a 24V) were dead. You might be interested in this 200391609843 on ebay. It doesn't say the postage to Russia but they do within EU for £25, so worth to ask, they ship worldwide.
I assume you scanned it for other faults already?
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Ivan Pevnitsky
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Scorpio Ghia '96, 2.3, Auto
Posts: 172
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Re: Emissions failure
« Reply #10 on: Dec 31st, 2009, 4:04pm » |
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Thanks, tlundkvi. Very good price for catalyst, because here (on exist.ru), it costs about 800 euros %.
I'm going to finland from 2 to 9 jan (to Ruka). I don't think I'll have time to get it from England.
My error are only gearbox-related (incorrect gear ration, shift solenoid fail)
Here's the scan of O2 sensor data for 4.5 minutes running engine. The idle, and then about 2500 (click to enlarge)
Is there anything wrong?
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tlundkvi
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Ex. Scorpio 2.9 24V -95
Posts: 909
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Re: Emissions failure
« Reply #11 on: Jan 2nd, 2010, 10:11pm » |
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To me, the O2 sensor reading seems in order, it is at least on both sides of the 0.4-0.5V average. Do you have the complete exhaust test reading, also for the idle test that passed (it might have been close to the limit)? Also what was the lambda? It would rule out e.g. too rich fueling (your LongFT1 seems good).
Have a nice trip, very nice and cold winter this year!
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Ivan Pevnitsky
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Scorpio Ghia '96, 2.3, Auto
Posts: 172
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Re: Emissions failure
« Reply #12 on: Jan 5th, 2010, 6:10pm » |
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I didn't notice the values on idle. hey don't measure lambda., but i'm not sure. They just put something in the rear of he car and check for CO and CH level =))
One more note: there's no catalyst in this car. It was broken while gearbox fixing
PS: yes, I'm in Ruka now. A little bit cold to snowboard 
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amigafan2003
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Re: Emissions failure
« Reply #13 on: Jan 5th, 2010, 9:00pm » |
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Quote:| One more note: there's no catalyst in this car. It was broken while gearbox fixing |
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You've just answered you're own question.
Fitting a cat will bring the HC reading right down. For the record - the HC limit for no cat equipped cars is 1200ppm - so you would be within the limit for a non cat equipped car.
Re high CO - gain, a cat will sort that.
Passing last year without a cat fitted sounds like it wasn't tested properly.
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Ivan Pevnitsky
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Scorpio Ghia '96, 2.3, Auto
Posts: 172
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Re: Emissions failure
« Reply #14 on: Jan 8th, 2010, 9:44am » |
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Might be. I'm just wondering how the non-cat-equpped cars that make much more affect on the air pass the MOt, and my not
I have a dedline of 18.01.2010 when I have to pass second chance MOT. If i won't pass it, i cannot drive my car anymore until fixing.
Does anyone in Finland can help me with the E-bay 200391609843?
I live in Saint-Petersburg, and it takes only 5-6 hours to get to Helsinki for me (including passing the border)
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tlundkvi
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Ex. Scorpio 2.9 24V -95
Posts: 909
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Re: Emissions failure
« Reply #15 on: Jan 8th, 2010, 10:57am » |
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PM sent.
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mindofitsown
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Posts: 117
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Re: Emissions failure
« Reply #16 on: Jan 10th, 2010, 10:03pm » |
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Hey guys many thanks,
She just passed! Lokks like a new exhaust at £260 solved the lamda problem!
This is definately the last time tho, cost a fortune over the last five years. New spring, welding, front wishbones, ac cooler pipes, loom, coil packs, wheel bearings, cc unit, exhaust.....u name it! I love her but time to move on?
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Ivan Pevnitsky
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Scorpio Ghia '96, 2.3, Auto
Posts: 172
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Re: Emissions failure
« Reply #17 on: Jan 14th, 2010, 7:37am » |
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Is it really a picture of Scoprio 2.3 catalyst?
Thanks
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gozz
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Been around awhile
Posts: 3475
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Re: Emissions failure
« Reply #18 on: Jan 14th, 2010, 7:52am » |
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That looks near enough to me,it's a pattern part though.
GOZZ.
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scorpio_man
Administrator
Ford Kuga awd
Posts: 5654
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Re: Emissions failure
« Reply #19 on: Jan 14th, 2010, 8:37am » |
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hi there
this is the ford part....
hth
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