Jump to content

Upstream o2 sensor wiring


Recommended Posts

So, I think I may have a problem with my o2 sensor and I want to replace it.

 

I went out to O'Rielly's without really looking at my situation, because I suck at vehicles, and figured I'd just get one that fits in a '97 240sx.  

 

The problem is, my previous owner has the o2 sensor rigged in with one red wire, when all the documentation that I can find says I should be using a heated 3-wire o2 sensor.

 

Does anyone know of a way to hook up the proper connection for this?  Or, if I must, a way to Jerry-rig an o2 sensor in there?  

 

Upon further Googling, I found this: http://www.wiringspecialties.com/rbo2seco.html

Which looks like it will work.  But then I'll still need to wire it into the truck.  Which is another hurdle that I'm unfamiliar with.

 

Here's a picture of the current wiring set-up...

 

20150524_1300221_zps4dlgwya3.jpg

 

Any help from you guys would be greatly appreciated.

 

Link to comment
  • Replies 6
  • Created
  • Last Reply

Top Posters In This Topic

Top Posters In This Topic

"You're goddamn right."

 

Edit:

I'm just gonna do an edit, to avoid double posting, but I had a thought.

 

The two white wires on the o2 sensor are the heater wires, yeah?  I think they are anyways...That means that the one black wire is my sensor wire itself.

 

So, I would just hook the black one up where the red one is and that sorts that bit out.  

After that, would the heater wires just need a source of electricity?  If I grabbed some unused wires coming out of the battery and connected them up, would that work?

 

I could, technically, just hook up the one black wire and call it a day...But doing things half-assed just doesn't seem all that good of an idea.  And, I imagine that upstream o2 sensors have heaters for a reason.  I mean, someone with a lot more knowledge about these sorts of things has engineered it to have heaters and I, for one, don't feel qualified to argue.

Link to comment
 

After that, would the heater wires just need a source of electricity?  If I grabbed some unused wires coming out of the battery and connected them up, would that work?

 

 

 

Yes but it would be on all the time. Connect to a switched source from the ignition ON position.

Link to comment

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.