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measor
19-06-2006, 11:02
Car has failed its MOT on emmisions as it is running to rich. I had decat pipe on for a while but put the cat back on for the MOT but it still failed. Now I know it can be a number of things which is making the car run to rich but does anyone know a common cause?

It could be my lamba sensor as I have an idle problem which is described somehwere on this site which sounds exactly the same.

The car was booked in for a full diagnosis but I cant afford to spend the £80 just to be told the problem as ive already spent about £1500 in the last 4 months on repairs.

What should I be checking?

Cheers

Gav
19-06-2006, 11:07
i had the same prob and was lambda sensor.

I had to have a new one put in and a new ISCV


u wont pass unless u take it to a tuner tbf...i had to do it, £80 for me also

and that was after i spent £thousands on it being restored

measor
19-06-2006, 12:32
Ok cool, why did you have to replace the ISCV as well? Is it worth buying the lamba sensor from somewhere like GSF or are the patent ones no good?
If i replaced the sensor would it still need to go to a tuners, what is it that they will do?
Cheers