New? linear O2 sensor

[xxalexx at ix.netcom.com]

There is a SAE paper onToyota sensor a few years ago.
Illustrated how they modified a lean burn sensor.
Did not show 8 wires.
The paper number is some where in the early GAR O2 archive
I will see if I can find it in my circular file
alex.
> This was found in the April 99 Import Service ( a auto repair trade mag), 
> page 10 top right column.
> #################################################################
> Lexus RX300 ( car like SUV) and Toyota ES300 3.0 V6 California only cars
> 
> The most significant service-related change is the linear oxygen sensorin the 
> exhaust manifold, or "air-fuel sensor" as Toyota calles it, a design that's 
> also been used by Honda.  Although it looks like a conventional four wire 
> sensor, it doesn't toggle within the one volt range.  Instead it produces a 
> voltage that goes up in a straight line as the mixture becomes lean, within 
> the 2.2-4.2 range.
> 
> ########################################################
> 
> It goes on to say Toyota techs can't get a useable reading with a volt meter, 
> the proper way is to read the data from the ODB II scan tool.  The photo and 
> blurb state/show a 4 wire plug.
> 
> Could this be something new?  I haven't been following the UEGO/Wide band 
> thread much.  From what I remember, the Honda/Horbia/NTK stuff used a 8 wire 
> system.
> 
> Harold
> 
>