Failed MOT -Lamda reading

[problemsaabman]

Hi,
My Dad passed his Saab 9000 CSE on to me last year and I've just put it in for it's MOT. There were a couple of minor things but the main thing is that its failed on the lamda reading. The garage say they've checked a few obvious areas like hole in the exhaust but has said they 'wouldn't know where to start'. It's an old car and to be honest I don't know much at all about cars. I don't want to spend loads on it. However, it would be a shame to get rid of it if its a problem that could be easily fixed.
Ideas, suggestions would be appreciated.
Cheers

[Jim Mesthene]

I don't know much about the foreign cars you drive over there, but I know a hole in the exhaust will affect the Lambda.
Fix the exhaust, get it good and hot on the highway, test it again.

[UK9K]

Hey problem, if the exhaust is NOT blowing anywhere, then you could try go down the scrappy, look for a lambda sensor from another 9000. Make sure you check how many wires/colors your has, and get the same one. Won't cost much, and if it works and passes the MOT, your sorted.

[boxman]

if changing the lambda sensor doesnt fix the prob' then you could be looking at a new cat, you could remove it and look inside to see if it is either blockes or has bits missing

[problemsaabman]

Hi All,
Thanks for the replies. Problem is I don't have a clue with cars and wouldn't even know what or where these parts are on the engine. Anyone know someone in South London, I'm in Streatham, who won't charge a fortune and might be able to sort it?
Thanks again for your input.
Steve