Faking an O2 sensor

[MysticZ]

Eric Bryant wrote:
> 
> Yep, the second set of O2 sensors on my '96 Impala SS sit right around that
> number if I remember correctly.  The ECU looks for a steady voltage to
> verify cat operation.  If the signal from the second set of O2 sensors
> starts to follow the pre-cat 02 sensor signal, that means that the cat's not
> working, and throws a code.

So basically if I build a gizmo that gives the sensor wire 600mv and has
a resistor that "looks" like the heater, it'll work? Shouldn't be too
tough.
-- 
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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