My neighbor has an early 90's 4Runner with 22RE, and his O2 sensor wire is broken at the sensor, and the rest of it seems to be missing from the engine bay. We looked at my truck, but my wiring setup is totally different, so that didn't help. He's getting really crappy gas mileage, and having some drivability issues, and we think that the non-connected O2 sensor may be the source of the problem. Could someone possibly post a picture of the location where the wire runs from the sensor into the wiring harness, or atleast provide a somewhat detailed description and wire color? If so, it would be greatly appreciated. Thanks in advance for any help!

 

Anybody? Even the wire color and general location that it attaches to the wiring harness would help, for some reason it seems to be missing? It's very frustrating, and I'm sure it wouldn't be too hard to figure it out if I only had someone take a quick look under their hood.

 

Try over on www.4x4wire.com in the 4wheeling section there are a bunch of people over there with older trucks.