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Topic: Mot fail (Read 504 times) |
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kittman
Full Member
Fibreglass at its best
 
Posts: 138
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My 95 cossie estate failed the mot on emissions(amongst other things), the guy recons it was o2 sensors on the exhaust . Is there any way I can find out which one is faulty and how much do they cost to replace. Had a scan done last week and it showed it was running rich on both sides P0171 P0174.
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dan_the_man
Full Member
I'm a YaBB newbie!
Posts: 314
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Re: Mot fail
« Reply #1 on: Jul 14th, 2007, 12:52am » |
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you can often fudge an emmissions test by removing the air filter . I understand this aint a long term solution.
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Highlander
Moderator
Expert
13 Scorpios, XR4x4, Suzuki SJ413 for off road :)
Posts: 8244
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Re: Mot fail
« Reply #2 on: Jul 14th, 2007, 8:45am » |
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Not heard of that one about the air filter, how does that work?
If you give the car a long hard run before the MOT to properly warm the cats up that can help
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on Oct 17th, 2011, 12:35pm, Simmo wrote:I give up !  Too much for an old boy!  |
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kittman
Full Member
Fibreglass at its best
Posts: 138
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Re: Mot fail
« Reply #3 on: Jul 14th, 2007, 10:26am » |
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I did about 30 miles of motorway before the mot so cats should have been warmed up nicely
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scorpio_man
Administrator
Ford Kuga awd
Posts: 5654
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Re: Mot fail
« Reply #4 on: Jul 14th, 2007, 11:32am » |
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hi there
have a read of .... http://www.fordscorpio.co.uk/fuelmonitor.htm
you can check the sensors out using a meter (not easy, but do-able), set to 1 volt. this is where VE software makes it a bit easier; you can 'see' what's going on.
i'd say it was more than just faulty lambda sensors; they'd should show up as codes. more like the fuel pressure regulator or cat(s). 
again, this is checkable with VE, if you can find a member nearby with a lead.
hth
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kittman
Full Member
Fibreglass at its best
Posts: 138
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Re: Mot fail
« Reply #5 on: Jul 14th, 2007, 11:54am » |
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Thanks for that, I,ll try and arrange a scan by a member
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