1999 ranger o2 sensor bypass

[danger_ranger777]

I have a 1999 ranger xlt 4x4 that i put strait pipes on and the code is going off for the rear o2 senceor. what can i do to fix this without having to put a cat back on. if someone could refer me to an adapter it would really be great, Thanks!!!

 

[5.0]

You may be able to get an O2 simulator, call Summit or Jegs. I suppose it may be possible to get a custom tune on your computer to eliminate the rear sensors.

 

[BobWiersema]

Did you put a pre-cat o2 sensor back in? You need that to adjust fuel trim, you can trick the post-cat because it just measures the health of the converter. As mentioned above get an o2 simulator, just remember that they only work for post-cat.

Or you can build one.
http://www.mkiv.com/techarticles/oxygen_sensor_simulator/


I found one here that should work.

http://o2simulator.com/

http://www.yourhotcar.com/prod/Oxyg...s/O2_Oxygen_Sensor_Simulator_-_Bypass/545967/