91 fj80 o2 sensors

[New2fj]

I just bought my 91 fj 80, and while going over the exhaust, i found a crack in the passenger side pipe coming off of the 4-6 manifold. I ordered a new pipe, and a new o2 sensor. I figured I would replace it now. While looking under the vehicle again, i found the existing pipe has no sensor on it, only one on the 1-3 pipe. Is this correct? I have seen sensor flanges on all aftermarket pipes that i have looked at, but i can't seem to find a wire anywhere close that might have connected a sensor at one time. If anyone can give me any info on this, I would appreciate it.

 

[jynx]

This was the first thing I did to my 91 after I bought it and there should be 2 sensors. Mine are located in the collector pipe just before the catalytic convertors. The are pointed upward about 20 degrees off vertical. The wiring for the outer pipe runs along the fender down to the sensor plug and the inner wiring comes out of a run of harness that runs with the trans. It comes over the frame rail to plug into the sensor. I think I have some pics of mine when I replaced them, I will post them if I can find them.

 

[New2fj]

I would appreciate any pics you have. I will look in the morning for the other plug. Thanks.

 

[New2fj]

Did you replace any of the exhaust. If so, did you use OEM parts, or aftermarket. Do you have a good source?

 

[New2fj]

Thanks for the info. I found it, and can now move on.

 

[jynx]

Good deal. Glad you found it. I got my O2 sensors from sparkplugs.com. they sell the Denso direct replacement sensors. Denso is the oem manufacturer I believe. Price was reasonable and shipping was quick.

 

[Hernando79]

Acabo de comprar mi 91 fj 80 y, mientras revisaba el escape, encontré una grieta en el tubo del lado del pasajero que sale del colector 4-6. Pedí una tubería nueva y un sensor de o2 nuevo. Pensé que lo reemplazaría ahora. Mientras volvía a mirar debajo del vehículo, encontré que la tubería existente no tiene sensor, solo uno en la tubería 1-3. ¿Es esto correcto? He visto bridas de sensores en todas las tuberías del mercado de accesorios que he examinado, pero parece que no puedo encontrar un cable cerca que pueda haber conectado un sensor al mismo tiempo. Si alguien puede darme alguna información sobre esto se lo agradecería.

Buenas noches.
El escape tiene el sensor pero desconectado y no veo donde conectarlo en fj80 1991, es el interno no el que va por el guardabarros, alguien sabe donde esta el conector o a donde llega ? Si tienen fotos muchas gracias