A/F Ratios via O2 Sensor

[bruce plecan]

The postings for the past few days about the O2 sensor, and it's behavior
for tuning have generally been true.  However there are some exceptions.
The 92 (GM TBI) cop car can be tuned so that at little cruise the display
basicly stays with only one or two (.1-.2V)on.  Some of the small 
toyotas, and I suppose others, will  do the same.  All the GM that I know
of go at least to .75 on heavy accleration, some of toyos only go that
high on prolonged WOT.  Build the display, while the car is running
right, and get used to how it displays, if you have a problem and then
build it, it may be confusing.  BTW, some of the turbo buicks can run
with most of the lights off, and then do a few oscillations, and return
to the low v output.  Then with the most minor of changes go back to what 
you would consider normal oscillations.
  Someone asked about a HC device the other day,  Heathkit made a gas
analyzer that used a wheatstone bridge, and a sensor that went in the
tailpipe by the end of the car.  The sensor I far as I know was
discontinued years ago, and when I was trying to track one down noone
could supply any info other than it was a resistor, if it had a special
coating I don't know, but the display was A/F Ratio.
  HTH  Bruce     nacelp at bright.net         I wonder if J Claybrook would
                                           have been so pro-regulation
                                           if the laws covered, brooms.