WBO2 thoughts

[The Punisher]

Thats an exact description of the Wideband O2 assembly that we had on the 
Dynojet where I used to work. We never had any problems with the sensors 
unless somebody instaled it sloppy and let the hoses or wire get cought 
between the rollers and rear tires. The force of being shot off the back of 
the dyno would kill the sensor evry time.
Even at the tail pipe and through a tube you can get real good readings. We 
didnt realy see much advantage to installing sensors in the factory O2 
sensor bungs.


From: Shannen Durphey <shannen at grolen.com>
>Reply-To: diy_efi at diy-efi.org
>To: "diy_efi at diy-efi.org" <diy_efi at diy-efi.org>
>Subject: WBO2 thoughts
>Date: Tue, 02 Apr 2002 12:01:35 -0500
>
>For the guys who don't have access to certain types of equipment.
>
>The word is out:  Don't leave your WBO2 switched on if the car is not 
>running.
>Some commercial WBO2 sampling units, however, can be left on for large 
>amounts
>of time.  What's the difference?
>
>One particular strategy is to mount the O2 sensor in an aluminum block.  On 
>a
>face 90 degrees to the sensor, a 1/4" steel tubing probe is connected.  
>This
>tubing is the "connection" with the tailpipe.  On the face opposite the 
>steel
>tubing 2 lines are connected.  These lines extend to the suction side of an 
>air
>pump.  The pump draws exhaust gas past the sensor while the car is running, 
>and
>draws air over the sensor when the vehicle is shut off.    Additionally, 
>the
>pump keeps moisture from condensing on the sensor and ruining it.  The only
>caveat is that you must keep liquid that condenses in the lines from 
>contacting
>the sensor (don't place the sensor lower than the lines).  To aid in that, 
>clear
>hoses are used.
>
>Again, this is just an idea for the thoughtful.
>
>Shannen
>Necessity may not be virtuous, but Chastity can't claim to be the mother of
>anything.
>
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