br1anstorm
NAXJA Forum User
- Location
- United Kingdom
I've just been reading other threads about O2 sensors - and I'm deeply impressed by the expertise of Rick Anderson and others on threads like this one
http://www.naxja.org/forum/showthread.php?t=909131&page=2&highlight=oxygen+sensor
Here's my question... I have a 1993 XJ 4.0 litre. I knew when I bought it (new) that I would be using it in foreign countries which did not have unleaded fuel. So I had the cat removed (I still have it, brand new...) and a through-pipe fitted. But I left the O2 sensor in place (the '93 XJ only has one, upstream of the cat). I knew it would probably be affected by lead; but the advice I got then was that the engine systems would run OK (on default settings???) . Anyhow, 14 years and 100k miles later, the engine still runs sweetly, and my gas consumption doesn't seem too bad.
I thought however that as I am now back in unleaded-fuel-land, I should probably replace the O2 sensor. But then I found out how expensive they are in UK! So the question is - will my sensor have been affected, and if so how, by running for about 8 of the past 14 years on leaded fuel, some of it pretty low-octane? And will this have had any other consequences for the computer-management systems or the engine itself. Should I change the sensor even if it costs £££? Or should I just continue running things as they are, on the grounds that "if it ain't broke..." ?
br1anstorm
http://www.naxja.org/forum/showthread.php?t=909131&page=2&highlight=oxygen+sensor
Here's my question... I have a 1993 XJ 4.0 litre. I knew when I bought it (new) that I would be using it in foreign countries which did not have unleaded fuel. So I had the cat removed (I still have it, brand new...) and a through-pipe fitted. But I left the O2 sensor in place (the '93 XJ only has one, upstream of the cat). I knew it would probably be affected by lead; but the advice I got then was that the engine systems would run OK (on default settings???) . Anyhow, 14 years and 100k miles later, the engine still runs sweetly, and my gas consumption doesn't seem too bad.
I thought however that as I am now back in unleaded-fuel-land, I should probably replace the O2 sensor. But then I found out how expensive they are in UK! So the question is - will my sensor have been affected, and if so how, by running for about 8 of the past 14 years on leaded fuel, some of it pretty low-octane? And will this have had any other consequences for the computer-management systems or the engine itself. Should I change the sensor even if it costs £££? Or should I just continue running things as they are, on the grounds that "if it ain't broke..." ?
br1anstorm