Re: O2 crimp v weld

["Dave Ewing" <rabbit16v@prodigy.net>]

The type of connection isn't in question, but access to the
ambient/atmospheric air to compare to the air in the exhaust.  The 02 sensor
will not have outside air to compare to the exhaust air if the wire is
soldered since the solder SEALS the gaps in the wire and this is where the
02 sensor gets the outside air to compare to the exhaust air.  Believe it or
not, the 02 sensor gets comparison air through the black wire.  This is why
(and I have done it too) you install that brand new expensive 02 sensor and
it has the same reading as the 02 sensor that you just took off.  I believe
soldering is the way, too, for almost all connections, but if I get
information directly from the manufacturer of a product, I am more likely to
abide by it than rumor or even manufacturers reccomendations.  Besides, it
makes too much sense!!!

Dave

> Read your post on scirocco digest.  There is element of truth in it, but
> good solder connection should first be mechanical, copper to copper.
> Solder should seal/reinforce.  Ask the Bosch boys how that O2 sensor lead
> is sensitive to soldering at lead join and not on the circuit board inside
> the computer.  Guarantee they solder leads in there.
>
> All IMO, of course, but soldering leads might keep corrosion away, but
> notice you did mention the shrink tube.
>
> And I'm too lazy to look up all the electomotive potentials of all the
> metal junctions to see if its substantial or significant.  Good advice to
> keep the impedence near design limits, though.
>
> -- Brian D./OH
> How can you be in two places at once when you're not anywhere at all...
> Firesign Theatre
>
> q
>
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