Date: Sun, 26 Jul 2009 21:12:47 -0700
Reply-To: Scott Daniel - Turbovans <scottdaniel@TURBOVANS.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Scott Daniel - Turbovans <scottdaniel@TURBOVANS.COM>
Subject: Re: oxygen sensor input wire
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=response
re
Knowing that VW never spent a nickel unnecessarily, I'd be inclined to use
at
least as much shielding as they did."
that, and shielding on vanagons and the 02 sensor wire ......
I always assumed it was to reduce radio interference........but I do notice
only a few vanagons have the grounded metal cap over the distributor cap
these days, and wonder if VW putting that 'shield cap' on the distributor
had anything to do with oxygen sensor input to the ecu ...??
----- Original Message -----
From: "David Beierl" <dbeierl@ATTGLOBAL.NET>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Sunday, July 26, 2009 8:15 PM
Subject: Re: oxygen sensor input wire
> At 10:15 PM 7/26/2009, David Clarkson wrote:
>>Just a question after some research of the archives. I feel that my green
>>O2 sensor input wire (sending voltage to the ECU) is shorting to the
>>grounded shileding in places from deteriorating insulation.
>
> Whence comes this feeling? Frankly it's pretty unlikely. The
> ordinary place for it to short is at the end, where a bit of the
> shielding might accidentally touch the center lead especially if
> someone weren't aware it was shielded. Otherwise, unless there's
> obvious physical damage or crimping of the green shell I'd put it
> about last place as a possibility. Do you have voltage measurements
> supporting the idea?
>
>> I plan on replacing
>>the sensor itself soon and am thinking about replacing the cable also.
>>The
>>archives have several listees stating that unshielded cable should work
>>okay
>>so long as there is no EMI in the vicinity of the cable (I'm concerned
>>about possible interference from the coil).
>
> Just wait until the next trucker with a kilowatt CB drives up
> alongside and keys the mike...however, VW shielded the part that's
> very near the high-voltage wires and left the rest alone. Knowing
> that VW never spent a nickel unnecessarily, I'd be inclined to use at
> least as much shielding as they did.
>
> But seriously, I very much doubt there's a problem internal to the green
> wire.
>
> --
> David Beierl - Providence RI USA -- http://pws.prserv.net/synergy/Vanagon/
> '89 Po' White Star "Scamp"
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