91 3fe o2 sensor locations (1 Viewer)

[wap13]

In an effort to get my 91 running as good as it can I want to install new o2 sensors. The problem is the PO had a "custom" exhaust made and removed the o2 sensors in the process. I have located one of the plugs, but am having a hard time finding the other. I have new sensors and weld in bungs. Pics would be great but a general description pointing me in the right direction would be much appreciated.

Thanks

 

[Devils Paw 80]

If you've found the front O2 sensor location, that should be all you really need. It would be in front of the catalytic converters, provided the custom exhaust retained them.

Sorry, I have a '97 so no help with a photo. You could possibly try a Toyota parts online place for an illustration.

 

[jonheld]

Both O2 sensors are located just before both cats on the downpipes.

 

[wap13]

I appreciate the help but there are no cats. It comes from both manifolds then Y'd into 1 pipe, 1 muffler and turned down directly in front of the axle.

Thanks