disconnected downstream Lambda

[picklesayrshire]

Noticed that i have a lambda sensor after the CAT which has been cut off, ive read that this 1 is not required, something to do with depollution or somethin, just looking for confirmation, its a 1997 mk1 VTS.

[Stevo123]

I think the 2nd sensor is only there to make sure the frst sensor is doing it's job and it's working okay. I would expect MIL light to come on if 2nd one is missing/cutt off.

[picklesayrshire]

no the light has never been on

[BobC]

Hi, the second sensor is for 2001 models onwards to meet more stringent emissions standards (depollution). It monitors the efficiency of the catalytic converter.

Sounds like you have an exhaust for a later model. No problems with it being disconnected on your car as the ECU is not monitoring it.

[BobC]

Hi Pickles,

So your car is now running properly - dashboard ok, no starting running problems.

Just leaves that oil pressure sensor to find...

[picklesayrshire]

well dashboards fixed, thot it was running ok, was out n about in it for a good 20m - half an hour, went into my mates n came bk out and it wouldnt start, its ticking over just not starting, any suggestions, oh yeah and still that to find as well lol.