extending 02 sensor leads

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beerdog

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I need to extend one O2 sensor lead about 6 inches. I have a new O2 sensor. The part store also sold a universal sensor with plenty of lead length but I need to either splice in a stock connector or reuse the connector pins. Any suggestions on the best approach.
 
I have been playing with the stock conenctor and figured out how to remove the wires from it. Ideally I would like to reuse the pins but they are crimped on So I don't see a good way to reuse them. Splicing may be the best option.
 
gonna just solder on the pigtail from the old sensor. anyone know what that sheathing is called? It looks like some type of high heat stuff.
 
i hope you are an expert splicer, if not buy extenders, o2 are sensitive to any voltage drop.
 
yall got me spooked. The guy at the parts store said you can't even extend them due ot changing the resistence but i know we do this all the time. Any truth to his claim? I already have a new one ina box from a while ago. I will just get the extension from SCP.
 
For the sake of conversation what do people do wrong to cause excessive voltage drop? Try using wire nuts? Splice in an inapropriate wire type? I was thinking of using universal version of the ones that wer eon the car. It simply has a very long lead. My approach would be to cut off several inches from a stock conenctor. Then intertwine the twisted pairs and then solder them.

The universal O2 comes with a splicing connector but I would think soldering woudl be better.
 
beerdog said:
My approach would be to cut off several inches from a stock conenctor. Then intertwine the twisted pairs and then solder them.
Click to expand...

I'd heat shrink it also.
If done correctly voltage drop should be minimal and I don't think it would be a problem.

Although, I have NO idea how sensative o2's are to voltage drop.
 
Heat shrink would be an automatic. Maybe multiple layers. I am just wondering what people do when they don't do it correctly.
 
yea, solder is better, if you splice i would use what they call a J hook splice.


beerdog said:
For the sake of conversation what do people do wrong to cause excessive voltage drop? Try using wire nuts? Splice in an inapropriate wire type? I was thinking of using universal version of the ones that wer eon the car. It simply has a very long lead. My approach would be to cut off several inches from a stock conenctor. Then intertwine the twisted pairs and then solder them.

The universal O2 comes with a splicing connector but I would think soldering woudl be better.
Click to expand...
 
I know....just go buy an extension. I have been reading up on and practicing splicing stranded wire. I have found this method produces the best results for stranded wire. It pobably helps that I have spent the last 10 years in electronics manufacturing of very complex mission critical products. There is no reason a properly solered connection will not work.

http://jaguar.professional.org/electrics/splicing.php
 
Last edited:
Be2lose said:
OK.

#1. connect the wires together with "J" hook.
#2. Twist the wires together.
#3. Slide on Shrink tubing to one end of wire
#4. Solder ( not too close to shrink tubing)
#4. Slide shrink tubing over the solder joint
#5. Shrink the tubing with either hot air gun or very carefully with a flame.

Feel free to add on. LOL
Click to expand...

I fixed it for you.
 
Electrical tape! that is not ment to hold connections together. Just to cover them. Even then it should be the last choice.
 
That hack job on the O2 sensor was horrible. I see a big wad of electrical tap. I ended up soldering the connections. Then 2 layers of shrink tubing. I then disassembled one of the connectors. This allows you to pull out wires so they can all be slid into the high heat resistant sleeving together. Ensuring the connections are in the sleeving. I will post some pics soon. although I forgot to a take a few I should have.
 
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