O2 Sensor current?

[Gary Derian]

I know of no 3-way cat system where the air is injected at the headers once
the engine is warm.  As you noted, it would greatly influence the O2 sensor
to the point that having a sensor becomes moot.  The AIR system on the '77
motor is for open loop and had no O2 sensor.

Gary Derian <gderian at oh.verio.com>

> On Tue, 23 Mar 1999, Gary Derian wrote:
>
> > Wouldn't you want to operate leaner than stociometric for better
economy?
> > The AIR should divert to the cat when warm and not affect the O2.  Part
> > throttle ping can be caused by insufficient EGR.
> >
> > I don't think a simple resistor in series will work as you want.
> >
> > Gary Derian <gderian at oh.verio.com>
> >
> >
> The air (at least on my vehicle) is injected in at the headers, so the
> air should affect the O2 readings, at least I cannot see how it would
> not affect the O2 readings.
>
> I would not think a simple resistor would work either, at least not
> that low of resistor, and if they are using a resistor, they are
> probably getting both open circuit voltage, and voltage through the
> resistor/current through the resistor.   I don't think with just one
> you can properly figure out battery charactistics.
>