Failed MOT high lambda
Moderators: Regional Representative, Technical Advisor
Forum rules
Only fully subscribed club members may post in this section. Please keep these threads on topic.
Only fully subscribed club members may post in this section. Please keep these threads on topic.
- prodgers69
- POC Newbie
- Posts: 60
- Joined: Tue Mar 31, 2009 7:57 pm
- Membership No: 20845
- Year: 1991
- Model: Trans Am GTA
- Engine: 350
- Name: Paul Rodgers
- Location: Pembrokeshire
- Location: Pembrokeshire
- Contact:
Failed MOT high lambda
My 4th gen failed its mot today on high lambda reading 1.262 tester suggested a new catalytic converter should solve this, does anyone know where I could get one quick, mot expires on Monday 16th. All other emission OK
CO: <= 0.300% 0.008 pass
HC: <=200 ppm. 4 ppm pass
Lambda: 0.970-1.030. 1.262. Failed
Is he correct or could something else cause this , no warning light and no codes stored.
CO: <= 0.300% 0.008 pass
HC: <=200 ppm. 4 ppm pass
Lambda: 0.970-1.030. 1.262. Failed
Is he correct or could something else cause this , no warning light and no codes stored.
- montrose
- POC Jr. Poster
- Posts: 120
- Joined: Sun Jul 10, 2011 4:01 pm
- Membership No: 11 T248
- Year: 1995
- Model: Trans Am
- Engine: 350
- Name: Larry Willett
- Location: Montrose, Scotland
- Location: Montrose, Scotland
- Contact:
Re: Failed MOT high lambda
I just went on eBay and got a sport cat. Came the next day. Just MOT'd my 4th Gen yesterday and if passed with no advisories. And it sounds better too!
- prodgers69
- POC Newbie
- Posts: 60
- Joined: Tue Mar 31, 2009 7:57 pm
- Membership No: 20845
- Year: 1991
- Model: Trans Am GTA
- Engine: 350
- Name: Paul Rodgers
- Location: Pembrokeshire
- Location: Pembrokeshire
- Contact:
Re: Failed MOT high lambda
You wouldn't happen to have sellers details, apart from emissions there was no problem, just an advisory for rear brake pads, which I knew needed replacing, got them here just been too cold to fit.
- montrose
- POC Jr. Poster
- Posts: 120
- Joined: Sun Jul 10, 2011 4:01 pm
- Membership No: 11 T248
- Year: 1995
- Model: Trans Am
- Engine: 350
- Name: Larry Willett
- Location: Montrose, Scotland
- Location: Montrose, Scotland
- Contact:
Re: Failed MOT high lambda
2.5" STAINLESS STEEL 200 CELL HIGH FLOW SPORTS EXHAUST CAT CATALYTIC CONVETER on eBay from turbo_revs - item number is 251230531744
- bhm1712
- Site Admin
- Posts: 2672
- Joined: Sun May 10, 2009 4:58 pm
- Membership No: 20-607
- Year: 2001
- Model: Trans-Am WS6
- Engine: 350
- Name: Ian
- Location: Nottingham
- Location: Nottingham
- Contact:
Re: Failed MOT high lambda
High lambda reading usually indicates too lean which can point to a leak in the exhaust system.
Have they ruled out any leaks even tiny ones??
Have they ruled out any leaks even tiny ones??
Ian Hopkinson - Membership Manager & Forum Administrator
Northern England & Midlands Rep
Northern England & Midlands Rep
- prodgers69
- POC Newbie
- Posts: 60
- Joined: Tue Mar 31, 2009 7:57 pm
- Membership No: 20845
- Year: 1991
- Model: Trans Am GTA
- Engine: 350
- Name: Paul Rodgers
- Location: Pembrokeshire
- Location: Pembrokeshire
- Contact:
Re: Failed MOT high lambda
I thought about a possible leak, but does not appear to be any, taking it to exhaust place tomorrow for them to check, if I can't get emissions down, may be on eBay in a couple of weeks, what's a 3.4 firebird with no mot worth
- lutonmatt
- POC Ultimate Poster
- Posts: 1990
- Joined: Sat Mar 28, 2009 11:15 am
- Year: 2001
- Model: cl55 amg
- Name: Matt
- Location: Chatham, Kent
- Location: Chatham, Kent
- Contact:
Re: Failed MOT high lambda
it should not have a check as pre the rules
if it failed the bet test then you have to match it up to a engine number and as a import the codes wont be there so you just run a basic test at a lot higher rates
your tester should know this
if it failed the bet test then you have to match it up to a engine number and as a import the codes wont be there so you just run a basic test at a lot higher rates
your tester should know this
Dr Matt AKA "Dodgy Windows"
kent krew
- prodgers69
- POC Newbie
- Posts: 60
- Joined: Tue Mar 31, 2009 7:57 pm
- Membership No: 20845
- Year: 1991
- Model: Trans Am GTA
- Engine: 350
- Name: Paul Rodgers
- Location: Pembrokeshire
- Location: Pembrokeshire
- Contact:
Re: Failed MOT high lambda
He's usually pretty good , may have been an off day, any one know nearest mot tester who knows this and can test asap, got expiry date wrong, motd till 26th
Anyone got a link to relevant section in testers manual, could print out and take it to him.
Anyone got a link to relevant section in testers manual, could print out and take it to him.
- lutonmatt
- POC Ultimate Poster
- Posts: 1990
- Joined: Sat Mar 28, 2009 11:15 am
- Year: 2001
- Model: cl55 amg
- Name: Matt
- Location: Chatham, Kent
- Location: Chatham, Kent
- Contact:
Re: Failed MOT high lambda
you should not need to state the manual if he is any good
Dr Matt AKA "Dodgy Windows"
kent krew
- prodgers69
- POC Newbie
- Posts: 60
- Joined: Tue Mar 31, 2009 7:57 pm
- Membership No: 20845
- Year: 1991
- Model: Trans Am GTA
- Engine: 350
- Name: Paul Rodgers
- Location: Pembrokeshire
- Location: Pembrokeshire
- Contact:
Re: Failed MOT high lambda
Going back tomorrow for retest, have to see how it goes, anyone know nearest yank friendly mot tester to S Wales, don't mind travelling,
- prodgers69
- POC Newbie
- Posts: 60
- Joined: Tue Mar 31, 2009 7:57 pm
- Membership No: 20845
- Year: 1991
- Model: Trans Am GTA
- Engine: 350
- Name: Paul Rodgers
- Location: Pembrokeshire
- Location: Pembrokeshire
- Contact:
- Davy J
- POC Posting God
- Posts: 3337
- Joined: Fri Oct 09, 2009 3:41 pm
- Membership No: 09-R61
- Year: 1999
- Model: FIREHAWK
- Engine: 350
- Name: DAVE
- Location: Clacton Essex
- Location: ESSEX
- Contact:
Who is online
Users browsing this forum: No registered users and 3 guests