O2 sensor replacement... need help with wiring

[DanRC30]

I'm replacing the rear O2 sensor now and the one I bought has two white wires, one black and one grey. The lead isn't long enough to reach the connector so I have to cut and solder. The one in the car has two black, one green and one white. Anyone know which wires go together? Or maybe someone makes a plug extension? Any help? 1991 year.

Thanks,
---Dan

 

[silver2002]

I had a [somewhat] similar situation. I was shipped the wrong sensor by oxygensensors.com. It was too short. I returned it, they sent the correct sensor. It was mis-labeled on their website. I was going to cut and solder but a mechanic friend simply said " wait and get the right part".

 

[DanRC30]

I had a [somewhat] similar situation. I was shipped the wrong sensor by oxygensensors.com. It was too short. I returned it, they sent the correct sensor. It was mis-labeled on their website. I was going to cut and solder but a mechanic friend simply said " wait and get the right part".

Well, I've had this one in the box for a few years now so returning it is off the list of possibilities. It's an NTK 24172 so it's the right one. While researching this issue, I noticed that CT headers come with extenders. I have CT headers on my car but there aren't any extenders. I'm going to call them today to see what the deal is and if I can get/buy a set from them. If not, seems that Dali Racing has a set that are priced reasonably. http://daliracing.com/v666-5/catalog/pod_index_browse_part.cfm?focus=2219

---Dan

 

[Larry Bastanza]

Black - White
Grey - Green
White - Black
White - Black

 

[DanRC30]

Black - White
Grey - Green
White - Black
White - Black

Ah, at first I was confused. But after the edit, it all makes sense. Thanks Larry!

 

[itrsteve]

Look at your actual plugs next to each other and look at the sequence of what wires are where

for instance I had

blue | white & white | green
------------- & ---------------
black | black & black | black

you would match blue with white and green with white.. You're essentially matching the position on the plug rather than worrying about the wire color.

 

[DanRC30]

Look at your actual plugs next to each other and look at the sequence of what wires are where

for instance I had

blue | white & white | green
------------- & ---------------
black | black & black | black

you would match blue with white and green with white.. You're essentially matching the position on the plug rather than worrying about the wire color.

But the problem with that is when two wires are the same color, you can't tell which is which since there is shielding over it. I could put an ohm meter on it but then that breaks the sealed wire.

 

[itrsteve]

But the problem with that is when two wires are the same color, you can't tell which is which since there is shielding over it. I could put an ohm meter on it but then that breaks the sealed wire.

You can cross the two blacks, they both perform the same function. The ones you have to worry about are the top two on the plug (if the clip is facing up)

have both plugs in front of you and compare what is in the upper left position and what is in the upper right position, then match when you're bringing them back together.

This is still fresh in my brain as I just did it on Saturday.

 

[DanRC30]

You can cross the two blacks, they both perform the same function. The ones you have to worry about are the top two on the plug (if the clip is facing up)

have both plugs in front of you and compare what is in the upper left position and what is in the upper right position, then match when you're bringing them back together.

This is still fresh in my brain as I just did it on Saturday.

I don't plan on pulling the plug out since the wire seems to go on forever. It just seems easier to cut off the sensor and splice it at the end. If I'm going to pull the whole wire out, I'm gonna get the extension wires so I'll do it once and only once.

---Dan

 

[costa]

Here u go Dan

http://www.lambdasensor.com/main/mcolours.htm

http://home.earthlink.net/~jcgebhart/o2sens.html

 

[DanRC30]

Here u go Dan

http://www.lambdasensor.com/main/mcolours.htm

http://home.earthlink.net/~jcgebhart/o2sens.html

That's a great resource. Thanks!