O2 sims

[Gary Heuston]

sorry I probably should have been more specific...I have a 1996 Pontiac
Trans
Am, OBDII, 4 O2 sensors and when you gut the cats or take em out you
need to
attach O2 simulators to the wiring to fool the computer into thinking
the second
set of O2's is working properly...I was just wondering if there was a
way to
build these on your own instead of paying $90 for a pair...

Gary
gary.heuston at afwa.af.mil



Bruce wrote:

> What are you trying to do?.
>
> On some of the simplier ecms for the ecm bench I use the injector signal to
> fire an LED thru a 1K resistor.  The LED has a voltage drop of 1.8v.  Soo I
> use two 10K resistors as a voltage divider to get a swing of .9v for the
> lenght and width of the injector signal.  Usually works fine on the C3s, but
> on some of the P4 they expect a time delay in the O2 reporting a Ing change.
> Bruce
>
> ----- Original Message -----
> From: "Gary Heuston" <gary.heuston at afwa.af.mil>
> To: <gmecm at diy-efi.org>
> Sent: Friday, September 14, 2001 9:20 AM
> Subject: O2 sims
>
> > does anyone know a way to make your own O2 sims?  While I could just go
> out and
> > purchase them in the spirit of DIY I would much rather make them...anyone
> got
> > any ideas on this?
> >
> > Mike Smith (TurboMike)  mentioned the PCM is looking for a 200-300mv
> signal from
> > the 02's?
> >
> > thanks!
> > Gary
> > gary.heuston at afwa.af.mil
> >
> >
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