"Faking" an O2 sensor

[Dave & Irina Eicher]

Hi Steve,

I agree with you wholeheartedly. I'm faced with the same problem time and
again. I'm working on putting my 1998 z28 engine/trans (LS1/T56) into my
1964 Impala SS. I will remove the Cats and will have to solve that problem.
I've got bigger problems right now though. I sure do wish I could find a
piece of software that would allow me to reprogram that PCM, like remove the
VATS, adjust fuel maps, etc.

I would think you only need to provide a voltage back to the PCM that is
right a Stoch, no?

dave

----- Original Message -----
From: MysticZ <lt1_z28 at houston-f-body.org>
To: <diy_efi at diy-efi.org>
Sent: Saturday, April 15, 2000 1:12 AM
Subject: "Faking" an O2 sensor


> I'm a bit annoyed now. On OBDII F-bodies there are 4 O2 sensors. Two
> before the cats, two after to make sure they're working. When removing
> the cats (which I don't plan on doing) you have to use simulators to
> keep the ECM from throwing a code. These simulators sell for about $90.
> What's bothering me is WHY they're $90?!? Is there something I'm
> missing? Shouldn't you just have to give it a voltage on the lean side
> of the pre-cat sensors? Can someone explain what I'm not understanding,
> or am I right in thinking that $90 is a bit much for a glorified
> resistor (like the skip shift eliminator for T56 transmissions, which IS
> a resistor)?
> --
> Steve
> 97 Chevy Camaro Z28, Mystic teal, A4, not stock
> 90 Kawasaki EX500A4, black, M6, not even CLOSE to stock!
> lt1_z28 at ev1.net  http://users.ev1.net/~lt1_z28
> Aluminum, steel, carbon fiber, titanium, and two cast iron balls.
> McMillan Motorsports- http://www.mmsbikes.com
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