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emissions fault

Posted: Wed Jul 18, 2018 1:03 pm
by Robobone
hi everyone
i have a 2007 Meganne convertable 2.0 l which is throwing up check emmisions.
had a test done and fault was lamba sensor codes were reset came back on after a week code showed catalitic convertor. warning lights went off now back on.
as I work in the exhaust industry i get at cost price decided to get cat and sensor changed.
now my question
mechanics rekon there are two lamba sensors on a cat but the cat showing at work has only one so i am not sure what is correct.
any idea?

Re: emissions fault

Posted: Wed Jul 18, 2018 6:56 pm
by grandadbobby
Hi,
according to the almost useful Haynes manual, there are 2 sensors.
One in the exhaust manifold and one downstream of the cat.
Good luck
Bob.

Re: emissions fault

Posted: Thu Jul 19, 2018 3:21 pm
by Robobone
thanks

Re: emissions fault

Posted: Tue Jul 31, 2018 2:11 pm
by Robobone
Update had new cat fitted new post sensor fitted by the garage ibought it off lights just come back on trying to locate pre cat sensor myoldone has a different connector to all the others from motor factors including cross referencing.
anybody else had this trouble
Update


Sorted ordered the part using actual part number off old unit