[s-cars] Re: Stumbling at low rpm (Now o2 sensors)

Marc Swanson mswanson at mswanson.com
Thu Nov 20 11:46:45 EST 2003

> No, the oxygen reference in terms of the gas travels thru the wires to
> sensor.  Soldering compromises that reference ability.  Solder
> electrical ability in an underhood environment too, I'll let Peter S
and Audi
> TSB/A broach that subject.

Hmm, according to the data sheets I've read on o2 sensors,  the
reference air is taken from immediately _outside_ the casing of the
sensor itself (eg _near_ the wires at the top of the sensor but not
actually _through_ them).  There is typically a small hole in the sensor
body at the top through which the sample is gathered.

Mr. Mockry has some nice cross-section diagrams here:


Marc Swanson, Software Engineer
Sonitrol Communications Corp.
Hartford, CT

Email: mswanson at sonitrol.net
Phone: (860) 616-7036
Pager: (860) 948-6713
 Cell: (603) 512-1267
  Fax: (860) 616-7589

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