Date:         Sun, 24 Feb 2002 17:30:54 -0500
Reply-To:     David Beierl <dbeierl@ATTGLOBAL.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         David Beierl <dbeierl@ATTGLOBAL.NET>
Subject:      Re: 1987 Oxygen Sensor Wiring 2.1 liter Digifant MV engine
Comments: To: Robert Steven Fish <fish@SALZBURG.CO.AT>
In-Reply-To:  <007f01c1bd77$98419fc0$0100a8c0@MEDION1800>
Content-Type: text/plain; charset="iso-8859-1"; format=flowed

At 04:09 PM 2/24/2002, Robert Steven Fish wrote:
>The wire appears to me, to be a format typical to "shielded-type" cable...
>however I have never seen a shielded cable in a car before (I"ve seen it
>often in cable TV coaxial cables, and RJ-45 network cables which need the
>shielding from any external electromagnetic interference).

Now you have. <g>


>Anyway, this fat green "double" wire has a connector crimped onto the middle
>"core" wire, which is at present, rather poorly wrapped around my existing
>Oxygen Sensor wire.

I don't understand the statement.  The normal connector is a female
spade-lug on both harness and sensor wires, each with a flat molded rubber
boot.  They are joined by a molded plastic double-male which seals the boot
on each end.

>   And the outer "shielding" wire is simply peeled back,
>and taped up with electrical tape.
>
>I cannot imagine that this is the correct way to handle this.

The clean way is to trim the shield braid off flush with the outer jacket,
leaving a bit of the inner insulation sticking out.  The important points
are not to nick the inner conductor, and not to let the braid short to the
inner conductor.


>Does anyone know the function of the outer wire of the O2 Sensor to Control
>Unit wire?

It's a shield -- grounded and one end, floating at the other.  It shields
the part of the sensor wire that travels bundled in the harness with other
wires.


>Does the OEM Oxygen Sensor come with a connector which uses BOTH of these
>parts of the fat green wire??

Nope.


><º)))>{   <º)))>{   <º)))>{   <º)))>{   <º)))>{   <º)))>{

Nice fish!

david


--
David Beierl - Providence, RI
  http://pws.prserv.net/synergy/Vanagon/
'84 Westy "Dutiful Passage"
'85 GL "Poor Relation"