Diagnosed with oxygen sensor problems, and
waiting to get the replacement parts sent to me
to Asia where I work.
I the meantime I have disconnected the upstream
sensor, just to find, that my 97 Cherokee 4.0/L6
runs actually very well without the sensor.
I could not tell any difference, and it does not look
like the gasoline consumption is going up.

My question is now: Does one need both sensors, or
is it just because of emission laws in America, that they
are required.
I mean, do I really need them here in Asia, or can I just
drive without them, and not risk any engine damage?

 

I'm surprised it runs well without the upstream sensor. Normally the one 02
sensor that it can run well without is the downstream sensor, the one
nearest the catalytic converter. Without the upstream 02 sensor, it should
be running very rich... too rich.

Jerry
--
Jerry Bransford
KC6TAY, PP-ASEL
See the Geezer Jeep at
http://members.***.net/jerrypb/

"Goldpalm" <goldpalm@usa.net> wrote in message
news:bgv9er$2o4$1@news.loxinfo.co.th...
> Diagnosed with oxygen sensor problems, and
> waiting to get the replacement parts sent to me
> to Asia where I work.
> I the meantime I have disconnected the upstream
> sensor, just to find, that my 97 Cherokee 4.0/L6
> runs actually very well without the sensor.
> I could not tell any difference, and it does not look
> like the gasoline consumption is going up.
>
> My question is now: Does one need both sensors, or
> is it just because of emission laws in America, that they
> are required.
> I mean, do I really need them here in Asia, or can I just
> drive without them, and not risk any engine damage?
>
>
>

 

I would be very hesitant to run without upstream sensor. I was told that
catalytic converters don't die - they are murdered............run too rich
too long & you will murder your cat.

--
Carlo F. Serusa, Jr. RPh
carlo.jr@comcast.net
'98 Sahara TJ - '89 YJ - '79 Scout II
O|||||||O
'92 Explorer '65 Mustang


"Jerry Bransford" <jerrypb@***.net> wrote in message
news:h_FYa.7459$2g.5838@fed1read05...
> I'm surprised it runs well without the upstream sensor. Normally the one
02
> sensor that it can run well without is the downstream sensor, the one
> nearest the catalytic converter. Without the upstream 02 sensor, it
should
> be running very rich... too rich.
>
> Jerry
> --
> Jerry Bransford
> KC6TAY, PP-ASEL
> See the Geezer Jeep at
> http://members.***.net/jerrypb/
>
> "Goldpalm" <goldpalm@usa.net> wrote in message
> news:bgv9er$2o4$1@news.loxinfo.co.th...
> > Diagnosed with oxygen sensor problems, and
> > waiting to get the replacement parts sent to me
> > to Asia where I work.
> > I the meantime I have disconnected the upstream
> > sensor, just to find, that my 97 Cherokee 4.0/L6
> > runs actually very well without the sensor.
> > I could not tell any difference, and it does not look
> > like the gasoline consumption is going up.
> >
> > My question is now: Does one need both sensors, or
> > is it just because of emission laws in America, that they
> > are required.
> > I mean, do I really need them here in Asia, or can I just
> > drive without them, and not risk any engine damage?
> >
> >
> >
>
>

 

I ran with the O2 sensor disconnected for five years only because it
wasn't connected properly from new, but once connected my fuel consumption
really improved.
Rgds Arthur.

 

I ran with the O2 sensor disconnected for five years only because it
wasn't connected properly from new, but once connected my fuel consumption
really improved.
Rgds Arthur.

 

I guess it did! LOL I'll bet your cat stopped lighting up, too!

--
Jim
98 TJ SE
90 SJ GW
http://www.delawareja.com/gallery/JDJeep98


"Art" <arensburg@optusnet.com.au> wrote in message
news:6Lxeb.131925$bo1.72729@news-server.bigpond.net.au...
> I ran with the O2 sensor disconnected for five years only because it
> wasn't connected properly from new, but once connected my fuel consumption
> really improved.
> Rgds Arthur.
>
>

 

I guess it did! LOL I'll bet your cat stopped lighting up, too!

--
Jim
98 TJ SE
90 SJ GW
http://www.delawareja.com/gallery/JDJeep98


"Art" <arensburg@optusnet.com.au> wrote in message
news:6Lxeb.131925$bo1.72729@news-server.bigpond.net.au...
> I ran with the O2 sensor disconnected for five years only because it
> wasn't connected properly from new, but once connected my fuel consumption
> really improved.
> Rgds Arthur.
>
>