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Subject:Re: 02 sensor readings
From:Ben huot
Date:Thu, 2 May 2002 11:35:08 -0400
Once the sensor is hot, it will produce a voltage based on how much oxygen
is left in the exhaust. A higher voltage (.7 to 1.0 VDC) indicates a richer
condition.  Lower voltage (0.6 to 0.0 VDC) indicates a leaner condition.
My '85 only has the one wire.  I have adjusted the idle mixture (hex screw
on AFM) by doing this, and it seems to work pretty well. (Jay)

Ben
http://www3.sympatico.ca/huotx/engine1.htm