Well i need less than a foot of extension for my passenger O2 and it will take a couple days to get one ordered. can you just make one? just four wires and the flat 4 pin male and female connectors, right? help would really be appreciated.

 

Can't see why you couldn't just splice in wire to make it longer. I've done that with my IAT sensor when I re-located it and it works just fine.

I wouldn't do the twist/tape method though, at least use crimps...

 

I just got 4 wires and soldered them in, nevermind the male and female pin connectors. Since your dealing with mV you don't want to be losing any resolution through a crimped connection.

-brent

Edit* Compstall, i didn't see your response, so that wasn't directed at you. I agree though, definitly don't twist and tape, and like you said at least crimp them, soldering would be prefered.

 

Just wait for the extensions. If you cant wait to drive it, drive in open loop until you get them. the good majority that made their own extensions end up buying new ones because soldered ones never seem to work rith. too hard to get the resistance right.

 

i thought you couldnt because one of the wires is filled with air between the actual wire and plastic insulation and it uses that to judge a correct reading?.......

Steve

 

Actually, a properly crimped connection is better than a soldered connection

 

Is there any thruth to the air in the wire or something?

 

Enlightenme, why is that Brent?

There are a lot of Brents in this thread!!! hahaha.

-brent

 

i have no truth to that, its just what i heard from some people....so my flame suit is on

 

Well, injuneer can better explain WHY but I believe it has to do with a slight breakdown of the wire when it is heated and maybe also the actual solder causing not as good of connection? I'm not really sure WHY... just know that I work in highly regulated industry and crimping is what is required for important connections... NO SOLDERING

 

i think you quoted the wrong guy

 

I just did a quick Google search. Here are a couple...

http://www.audi-quattro.org/cgi-bin/.../CrimpOrSolder

http://www.pupman.com/listarchives/2.../msg00695.html

http://www.alberg30.org/pipermail/pu...st/004709.html

 

Thanks. Fixed

Also, depending on WHAT you extend, you may find yourself soldering stainless steel and that can be difficult

 

I Soldered all mine, then heat-shrinked each indiviual wire, then Heat-shrinked the bundle, then put a Braided Kevlar sheething over both sides o2 sensors wires that I extended.

I know that crimp thing, but the blue-butt-connectors are HUGELY prone to failure.. the crimp connectors that are MIL-SPEC are ones that grab into both the Wire and Insulation, You also need the proper crimping tool to do those correctly, for each different style of crimp that we use at work there's either a $150+ hand crimping tool, or a $50 crimping insert for our auromatic wire crimper...

I work at an Aircraft Lighting Company, we make the Power-supplies as well...(Both Business Jets & Military Applications)

I'd rather Solder the wires together in an application such as our cars, unless I had the correct equipment handy.. I've seen TONS of those Blue-Butt connectors fail, and just pull apart.. even if they've been crimped correctly, if there's any movement in the wires, the indiviual strands start to break at the crimp point, and eventually your wire starts breaking strand by strand. This is why the MIL-SPEC crimp connectors that are always said to be "Superior to Soldering" always crimp not only onto the bare wire, but onto the insulation as well; to remove the strain/stress from the indivdual strands, and put it on the insulation...

I can get into other details as well, but that's the just of it...

 

well, so far I am far from convinced, but not stubborn on my thoughts.

I do not believe that this is the case that we are examining at all! We are measuring a low current signal, not a high current signal.

IMHO the crimped connector allows more corrosion. The soldered connection certainly does cause embrittlement in the wires, I do agree with that, BUT my O2's are under no physical stress.

Soldered connections are commonly used in high performance audio connections. Bryan Herter of PCMforless prefers soldered connections and he has more experinece with O2 sensor extensions than most people, IMHO. I am still definitly open to more information reguarding this matter since I am not an EE.

-brent