I was wondering if anyone has any info on bypassing the o2 sensor in the cat of a 96 xj. Mine has took a dump on me and I was thinking instead of replacing it and spending alot of $ is there another way to deal with it and get rid of check engine light. Thanks in advance for any info.

 

Uh, no. The PCM is looking for fluctuating voltage from the O2. A functioning O2 sensor is needed to keep the CEL off.

 

Uh, yes. He just needs to supply 450mV (narrowband) or 2500mV (wideband), depending on the o2 sensor.

Also try here:
http://www.o2simulator.com/

Read this thread:
http://www.toyotanation.com/forum/15...many-pics.html

 

Is the O2 sensor out, or is the cat bad? From what I understand, the O2 at the cat monitors the cat, not air/fuel.

The cheapest fix is to put a piece of tape over the check engine light : )

 

Just repair the problem correctly.

 

Under $100 to fix right, and that's estimating on the high side

 

why would you make your problem even worse than it already is?

 

Well I'm actually also wanting to kill my kitty. I know it's bad which is probably why I'm getting a code from the o2. I'm not going to spend the $ to replace it for sure. No checks here. And I only paid $400 for this thing. Should I just weld a bung in the pipe I replace it with?

 

You Tube CEL fix. cheap, easy, works. as long as your o2 sensor is still good. all the kids are doin it on the imports in my old stomping grounds. and yes im the old timer now at 43. Depressing

 

Might as well put some electrical tape over the light........

 

3 of the 4 Jeeps in my family have the wire to the cat cut, no check engine light. Mines OBD-I the others are OBD-II
If your getting a code for the O2 sensor itll be the one just on the exhaust side of the manifold

 

there are no second 02 sensors on OBD1 xj's, and a cut/missing 02 sensor will cause a check engine light. so I call B.S.

 

 

http://www.magnumtuning.com/ look here for a simulator , to fix your issue,But I would just buy a new one.

 

I would go into detail but last time I did I got a warning because it is not legal in the US