Omega Owners Forum - MOT fail including emissions

pigtown

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Posts: 103
swindon
Gender: male

Drives: 2.2 petrol/LPG

Re: MOT fail including emissions
Reply #30 - 14. Feb 2011 at 19:01

Did all the suspension work and changed the post cat sensor. retest passed all the suspension tests but still failed emissions.
The failed readings are fast idle tests 1.Lambda 1.16 (limit .97 - 1.03), 2. Lambda 1.17.
So consistently high lambda reading.
I did have a look at the pre cat sensor and it is much more difficult to get to and the wiring loom isn't standard (probably due to LPG) so I need a better look at it to figure it out.
Out of interest is the MAF reading Nigel did in range? I ask as it runs badly initially on petrol and that seems to be brought up as a common fault. That would be easier to change!

also the new sensor is about 10mm longer than the old one and hits the heatshield stud on start up!

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TheBoy

Administrator

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TBE has an MOT!

Posts: 64817
Brackley, Northants
Gender: male

Drives: 98 MV6, 03 Elite, 00 25, 89 ZX10

Re: MOT fail including emissions
Reply #31 - 14. Feb 2011 at 19:28

pigtown wrote on 14. Feb 2011 at 19:01:

Did all the suspension work and changed the post cat sensor. retest passed all the suspension tests but still failed emissions.
The failed readings are fast idle tests 1.Lambda 1.16 (limit .97 - 1.03), 2. Lambda 1.17.
So consistently high lambda reading.
I did have a look at the pre cat sensor and it is much more difficult to get to and the wiring loom isn't standard (probably due to LPG) so I need a better look at it to figure it out.
Out of interest is the MAF reading Nigel did in range? I ask as it runs badly initially on petrol and that seems to be brought up as a common fault. That would be easier to change!

also the new sensor is about 10mm longer than the old one and hits the heatshield stud on start up!

That needs to be resolved. Forget LPG for now.

Were the BLMs reset?

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pigtown Junior Member Offline Posts: 103 swindon Gender: Drives: 2.2 petrol/LPG	Re: MOT fail including emissions Reply #32 - 14. Feb 2011 at 19:43 Don't know how to reset the BLMs (Block learn values you mentioned earlier)? Nigels reader couldn't see them. Is there a way to reset them without a reader?
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Entwood

Omega King

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Quietly Confident

Posts: 13708
North Wiltshire
Gender: male

Drives: 3.2 Elite (with LPG)

Re: MOT fail including emissions
Reply #33 - 14. Feb 2011 at 20:10

TheBoy wrote on 14. Feb 2011 at 19:28:

pigtown wrote on 14. Feb 2011 at 19:01:

Did all the suspension work and changed the post cat sensor. retest passed all the suspension tests but still failed emissions.
The failed readings are fast idle tests 1.Lambda 1.16 (limit .97 - 1.03), 2. Lambda 1.17.
So consistently high lambda reading.
I did have a look at the pre cat sensor and it is much more difficult to get to and the wiring loom isn't standard (probably due to LPG) so I need a better look at it to figure it out.
Out of interest is the MAF reading Nigel did in range? I ask as it runs badly initially on petrol and that seems to be brought up as a common fault. That would be easier to change!

also the new sensor is about 10mm longer than the old one and hits the heatshield stud on start up!

That needs to be resolved. Forget LPG for now.

Were the BLMs reset?

All the maxscan can do AFAIK is to remove all active and pending faults, which is what I did. Readings are in the post on the first page

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V6 Cam locking/setting kit, Maxscan GS500 OBDII code reader/EML resetter available. Click for some Pictures

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TheBoy Administrator Offline TBE has an MOT! Posts: 64817 Brackley, Northants Gender: Drives: 98 MV6, 03 Elite, 00 25, 89 ZX10	Re: MOT fail including emissions Reply #34 - 14. Feb 2011 at 20:13 Hmmm, my South-of-the-M4 geography isn't great , despite getting non-stop Southampton news here But how far are you from Kevin Wood?
Back to top	If you are going to kick a car, remember to wear appropriate footwear Any posts are the result of my own views as a member of OOF, which may or may not be the same as my views as part of the Admin Team. IP Logged

Entwood Omega King Offline Quietly Confident Posts: 13708 North Wiltshire Gender: Drives: 3.2 Elite (with LPG)	Re: MOT fail including emissions Reply #35 - 14. Feb 2011 at 20:15 TheBoy wrote on 14. Feb 2011 at 20:13: Hmmm, my South-of-the-M4 geography isn't great , despite getting non-stop Southampton news here But how far are you from Kevin Wood? It's about an hour and a quarter if there's no traffic .. 70 odd miles if memory serves ..
Back to top	« Last Edit: 14. Feb 2011 at 20:17 by Entwood » V6 Cam locking/setting kit, Maxscan GS500 OBDII code reader/EML resetter available. Click for some Pictures IP Logged

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