Does a 1985 toyota pickup 4x4 22R carb non-california have a oxygen sensor If it does what is the wiring diagram for one?

Answer

Some did, some didn't. Look your exhaust manifold over, and see if yours did, or did not, come with a factory installed O2 sensor. There's not much of a wiring diagram, because there's only one wire. If you need to replace the O2 sensor, you must cut the wire, to free up the sensor, solder (no crimp connectors, period) the new sensor wire, into your existing harness, where you cut the old one, and use shrink tubing, to weather proof the splice.

If your truck does not have an O2 sensor, disregard the above.

Answer

I know how to replace one, the previous owner put on a new exhaust (without any mount for an 02 sensor) and doesnt recall if it had one or not. If it did, i need to know the wiring route so I can istall a whole new wire (there is none now, previous owner may have cut it thinking that he didnt need one). Actually starfuel, the o2 sensor on the 1985 toyota pickup 4x4 are not on the mainfold, they are on the pipe just before the cat converter.

First answer by Sargesyoda. Last edit by Sargesyoda. Contributor trust: 70 [recommend contributor]. Question popularity: 14 [recommend question]