My wife doesnt even pay attention anymore. She has given up on me, I am a lost cause.
If I am in the garage and dinner is done she wont even call me, being in the garage with my Rover is worse than internet ****, you start at 5 and before you know it it is morning and time to go to work.

 

Fix that and then you should be good to go.

 

if you have a disco you better be running rich for repairs! LOL!

 

Another option is to install a aftermarket O2 sensor(s). You can choose between a narrowband and wideband O2 sensor.A narrowband sensor cost less than a wideband but it's not as accurate.

Since we have a V engine, you would have to decide where to install the O2 sensor. Install one sensor on each bank before the pre-cats (this would give you more accurate fuel ratio info - but cost more)or install onewhere the y-pipe merges into one (this would not be as accurate but cost less)