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mot fail on lambda
 Moderated by: Tom James, MOTman, KevG  

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KevG
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Joined: Wed Aug 16th, 2006
Location: Manchester, United Kingdom
Posts: 444
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 Posted: Tue Aug 12th, 2008 09:39 pm

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Pleased to hear we were of help. Job done. That was easy was'nt it?


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kev

volvogav
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Joined: Tue Aug 12th, 2008
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 Posted: Tue Aug 12th, 2008 09:38 pm

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Thankyou, well it passed today!!, lambda sat easy at 1.00 !, before the retest i rebuilt any suspect joints in the exhaust, put carb cleaner down the intake, added 2 gallons of fresh unleaded with sytem cleaner then ragged the poor french thing up the m5  at ##mph. which of these cured the problem i didnt know but the gneral view seems to be a leak in the exhaust, so thanks very much.:)

KevG
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 Posted: Tue Aug 12th, 2008 05:36 pm

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It will be an air leak.

 

kev

smtester
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Joined: Tue Feb 26th, 2008
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 Posted: Tue Aug 12th, 2008 12:08 pm

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Check there is no leaks on exhaust, even small, very close to passing usually caused by slight leak on joints.

volvogav
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 Posted: Tue Aug 12th, 2008 07:01 am

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Hello, got a customers 92 clio, 1.4 rt petrol. ,all problems cured for mot , only wont pass lambda test, locks out at 1.04 and stays there!, new exhaust rear end, full service, plugs,filters etc and 2 miles to mot station so should be reasonbly warm.

co2 figure is very low , maybe .03 during test. lambda is fairly new and renualt say that they just dont generally fail, help!!!!. would thrashing the car up the motorway with octane booster/fuel cleaner in the tank help? exactly how hot do these have to be?. any help appreciated as i normally restore cars pre 1980 !,so this cat/lambda stuff is all new to me!:?


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