At 02:12 PM 5/7/02 -0400, you wrote:
>450mV is 0.45V meaning that you are getting a signal.  It is best to measure
>this with a analog multimeter as most digital ones are too slow to read the
>always fluctuating output of the O2 sensor.  It should be, on a correctly
>tuned vehicle 700mV plus AND minus 200mV with the average being 700mV.

OK, now I'm confused. I thought the crossover point was 450-500 mv, not 700
mv. If the readings are consistently in the range 500-900 mv, wouldn't that
mean the engine was consistently running rich?

John