I failed my smog. I'm not really surprised, just disappointed that I didn't know about pretests.

Anyway, the main suspect for making it fail is the o2 sensor for reasons I could explain if someone asked, but for now I don't think it's relevant.

My question is does anyone know if an obd2 o2 sensor will work on an obd0 car. I assume without the heater, it's just an o2 with a white signal wire, just like the older ones. So, if i run an obd2 o2 and plugs, but only run the signal wire out of the second plug, will it work (read correctly)?

I ask because I have 5 o2 sensors sitting in the garage. 2 in the japanese b16, 2 in the C-rv manifold/cat, and one in the b18 junkyard manifold (on the car, suspect)

The 2 in the b16 manifold are old, beat, and possibly still ok. The one in the b18 manifold i think i ruined. But the 2 in the C-rv Parts, especially the one behind the cat, are newer, nicer, driven by a girl, and obd2.

While buying a new one is not out of the question, and tomorrow will commence testing on these things, I thought I would ask if anyone already knew for sure.

Anyone?