WB O2 Sensor Resistor & Connector Again

[Bernd Felsche]

bcroe at juno.com tapped away at the keyboard with:

> Whatever works for you.  I would much rather improvise
> a resistor, than mess up that expensive sensor toward
> the day I DO find a connecor, or buy more sensors.
> 
> My method is not to try to find the exact right value
> resistor.  If I needed 2340 ohms, I would take a 2200
> ohm and put in series with a 120 ohm, then put an
> 18 or 22 ohm in series depending on the accuracy of
> the first 2.  Putting a 1 meg in parallel with a 1K will 
> bring it down to 999, etc etc.  Lots of possibilities.

You can "calibrate" film resistors by filing a notch in them to
increase their resistance.  Repaint/lacquer to protect the material.
Maybe that's unfashionable nowadays. 5% resistors I calibrated 20
years ago are still OK.

BTW: Never trust colour codes. Check each resistor before insertion.

> I tried removing a pin from a different connector and 
> plugging it into the needed position on the correct
> 2 X 4 connector as discussed, works well.  I would 
> advise taking the first pin out of a connector you can 
> hack up till you find how it works.  I'll need to make 
> another raid to get some partially equipped conn. I 
> left in the 'yard before.  

You can try making your own "molded" plug using just matching
connector pins/sockets; connect them up as required, crimped to your
harness; lightly mist the connector with a WD spray, fill the gap
between pins and connector housing with silicone ("catalyst-safe" of
course). Allow to cure.  

When you change sensor, carefully peel away the sides of the
silicone "plug" from the hard connector and pull uniformly on the
wires. You should get a molded plug ready to connect to the
replacement sensor.

-- 
Bernd Felsche - Innovative Reckoning, Perth, Western Australia
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