Before winter came around I bought a used full greddy exhaust system and a used dc sports header that I finally just got around to putting it on 2 days ago. I was going to just reuse the oxygen sensor in the old stock header but I couldn't get it to come out so I just figured I would buy a new one. I called the local O'Reilly's to see what they had in stock and to figure out pricing and they said the only two things they have that would fit in my application is a 4 wire universal oxygen sensor (69.99) and a 1 wire universal oxygen sensor (19.99). (I told them I didn't want one with a plug because that is out of my price range at the moment) I don't have the money at the moment to buy the four wire one that I need so could I wire the 1 wire one up to work?
I was looking around online and I found this site (http://www.hybridautomotive.com/tech/o2/) explaining how to do it but I really don't want to have to hack into my other sensors like that, is there any other way of doing it?

Also, my friend told me that he went to the same store a while back and bought a three or four wire (he can't remember exactly) bosch oxygen sensor for like $12. I asked them about that and they told me about the 1 wire one again. I tried to find it on their website but I couldn't find anything about it.

 

Single wire wont work with anything but a P05 or P08.

 

Even the way the link I posted describes? Reusing the plug from the old o2 sensor and wiring the one wire off the new o2 sensor to one of the wires on the plug then wiring the other three wires up to each of the other sensors (TPS, A6 ecu pin, and IACV)? I really don't want to have to do it that way but from what I can find, that's the only way my budget will allow, unless there's another way I'm not finding...

EDIT: By the way, its got a d15b8 and I've got the stock P05 in there, but I've got a 4 wire plug for the oxygen sensor in my engine harness, how could I get it work?

 

This is something I plan on researching a bit more. I too have a full CX body and original B8 engine, unmodified. I was under the impression that the B8 uses a single wire O2 sensor as well. I plan on switching up to a different engine soon so I figured I'd run the extra wires directly to the ECU ahead of time. I went to check out the distance (length) from firewall to O2 plug and came to find out that my car has a 4 wire harness plug already for the O2 (and the O2 sensor itself is 4 wire as well). Not a big deal, if anything that's one less thing to worry about, but I was wondering if they really are 4 wire or 1 wire? I'm going to check the FSM later after work.

 

California uses a 4 wire part #: 36531-P2E-A01



All other 49 states use this part number for a one wire (also uses a different manifold as well): 36531-P05-A02

 

^thanks for the info

 

My old B8 had a 1 wire, I'm not in CA.

 

I'm not in California and I've got 4...

What should I do? Bite the bullet and get the 4 wire or figure out how to get the 1 wire to work on my 4 wire plug?

 

If you're running a federal P05 then yeah, just run a single wire, it goes to the white wire.

 

how do I tell if its federal or California?

 

California
37820-P05-L00
37820-P05-L01

49 State
37820-P05-A00
37820-P05-A01

for reference (94-95 P05 shown)

 

sweet mine's the 49 state one. Guess I'll be getting the one-wire tomorrow