Re: O2 Sensor Works HOW? was: Fw: RE:solder vs. crimp

["MrAudi" <mraudi25@epix.net>]

i just downloaded 140 messages so i apologize if i repeat anything. the o2
sensor works with heat. if you were to observe the o2 output on a cold car
you would see an obvious difference after the car warms up. all new cars
have heating elements built into the sensor so that it works almost
immmediatly after the engine is started. the sensor does not measure
anything outside of the exhaust system. the reading from the sensor is
analog, but the computer interprets it to be digital (on/off). there for the
wires would not have to be exposed to the atmosphere. the problem i was
talking about in regards to soldering the wire is this, solder is made up
mostly of lead. as we all know lead has a reletivily high resistance to
electricity. the computer i a car relys on a precise signal from the o2
sensor. a difference of .01 volt will affect the mixture. so soldering the
wires with lead solder could concivably affect the sensors operation. ok now
i need to go bandage the pointer fingers on both of my hands.......lol

Jason Neubold
86 Tornado Red 16v
85 Tornado Red Audi Coupe GT
----- Original Message -----
From: "Fry, Larry" <LEF@chem-tronics.com>
To: "T Berk" <tberk@mindspring.com>
Cc: "Scirocco List" <scirocco-l@scirocco.org>
Sent: Wednesday, November 14, 2001 6:49 AM
Subject: RE: O2 Sensor Works HOW? was: Fw: RE:solder vs. crimp


> Makes no sense that the O2 sensor's designers would have it sampling
> atmosphere through an electrical wire (even if that could be done, which I
> doubt) when a simple port in the sensor's body would suffice.  Also, why
> would it need to sample atmosphere at all?  Within a few tenths of a
> percent, the concentration of O2 in the atmosphere is a known constant.
> I'm with you on this one, TBerk.
>
> Larry  sandiego16V
> old (anal) crock and his old 'Roc
>
> -----Original Message-----
> From: T Berk [mailto:tberk@mindspring.com]
> Sent: Tuesday, November 13, 2001 9:25 PM
> Cc: Scirocco List
> Subject: O2 Sensor Works HOW? was: Fw: RE:solder vs. crimp
>
>
> Dave Ewing wrote:
> >
> > Totally missing the point.  Solder all the wires you want, even use pipe
> > solder, I don't care, I just said that the wires to the 02 sensor need
to
> be
> > crimped as per Bosch.  This has nothing to do with strength or type of
> > solder or any other wires in the whole car, just the 02 sensor wires.
> This
> > is why the generic 3 wire 02 sensors that you can get from Bosch have
> > the crimps on them and includes a note on what to do.  HTH!!
> >
> > Dave
> >
>
>
> Is the WIRE really adding value via exposure to outside air  OR  is the
> O2 sensor built with little ports or holes that allow for the sensors'
> element to have an Exhaust vs Atmosphere reading?
>
> I have trouble with the idea the WIRE needs atmosphere exposure. Don't
> believe it.  It's my conjecture a crimp on is easier and makes economic
> sense.
>
> TBerk
> sometimes Head = Knuckle, sometimes just Hard.
>
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