O2 Sensor - Team Camaro Tech
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post #1 of 9 (permalink) Old Apr 25th, 12, 10:51 AM Thread Starter
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Alan
 
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O2 Sensor

Got a new O2 sensor for my new cat pipe I will be installing this weekend. The sensor came with raw wire ends so I need to splice it onto the existing plug. Does it matter if it is a crimp or solder connection? I seem to recall something about crimps being better in this situation.

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post #2 of 9 (permalink) Old Apr 25th, 12, 11:33 AM
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Re: O2 Sensor

The type of connection is not as important as the integrity of it in this use.
I most often do a crimp connection if it can be done correctly - BUT ... I make sure it completely water-proofed when finished!
You can use shrink-tube or coat it completely with silicone (or both) as long as you know you can keep moisture out of the connection.
Any corrosion in the future will change the hysteresis of the response and lead to poor tuning of the system.

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post #3 of 9 (permalink) Old Apr 25th, 12, 01:35 PM Thread Starter
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Re: O2 Sensor

hysteresis?

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post #4 of 9 (permalink) Old Apr 25th, 12, 01:40 PM
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Wink Re: O2 Sensor

Quote:
Originally Posted by alanrw View Post
hysteresis?

alan

Is "Response Range" better -

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post #5 of 9 (permalink) Old Apr 25th, 12, 02:17 PM Thread Starter
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Re: O2 Sensor

I'm still at "bad connection". I can see where a cold solder joint could wreak havoc, it just seems that a good solder joint would trump a crimp connection, no? The only advantage I see to crimp connectors is they are faster in a production setting.

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post #6 of 9 (permalink) Old Apr 25th, 12, 03:10 PM
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Wink Re: O2 Sensor

I for one always used to do and recommend a soldered joint over crimps for many years - but I've found that many just don't know how to correctly clean, heat and complete a solder joint anymore - so the crimp is a decent fall-back ...

I've also had to re-do a wiring job someone did using acid-core solder on a TPI street rod installation a few years back - what a mess
The joints had corroded to the point of failing in several places causing all sorts of issues with the ECM system.
They also over-heated many of the wires - did they use a torch? - and they were so brittle at the ends that I had to cut quite a ways back to find good wire

If you know how to solder, use the correct materials AND seal it against water penetration that could cause future corrosion, then I would go that way.
If you don't, use of the crimp with the proper crimping tool will produce a quality joint that should function just as well ...

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post #7 of 9 (permalink) Old May 1st, 12, 08:27 AM
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Re: O2 Sensor

There is no substitute for a soldered connection done right, crimps are just faster. Is this going in a factory vehicle? I've had poor success with the splice in O2 sensors, they just do not work as well as an OE application.
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post #8 of 9 (permalink) Old May 1st, 12, 08:46 PM
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Re: O2 Sensor

A little late to the party, but if you take the sensor back and ask for the Bosch equivalent they usually come with watertight posilocks if it's a universal one.



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post #9 of 9 (permalink) Old May 4th, 12, 06:14 AM
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Re: O2 Sensor

Good luck with that. The cheapo no connector sensors usually don't work out so well. Just try to get good tight crimps and hope for the best.
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