O2 sensor fooler

[D. T. Kelly]

Ross,
     That's a good question, and I can't argue with you either way. Perhaps
you can tell me. When I have a scan tool hooked up and floor it, I still
get a reading and the status does not change to open-loop. I must admit I
was under the impression the ECM monitored the O2 reading at WOT, and my
scan tool seemed to bear that out. Am I missing the boat, here? Keep in
mind this engine is a HO Quad4 from a 1990 Beretta GTZ.
      Wouldn't it be wise to always monitor the O2 reading...especially at
WOT?

Tim


> > Seth,
> >      That sounds interesting...I could fool around (not
literally...well,
> > sorta) with my Quad4 Fiero. I don't think they richen it up enough
under
> > full throttle for some reason.
> >      Tell him to start coughing!
> > 
> > Tim
> 
> Correct me if I'm wrong here, but the ECU is only interested in the 
> O2 sensor O/P in closed loop, not WOT. Or did Pontiac install wide 
> band O2 sensors on the Fiero ;-)
> 
> Ross Myers