O2 sensor pullup resistor values?

Ludis Langens ludis at cruzers.com
Thu Dec 6 01:16:18 GMT 2001


Peter Florance wrote:
> 
> Anyone have any idea of typical ECU pullup resistor (to ~ .45V)  values for
> O2 sensors inputs? I'm trying to make a analog circuit to average 2 sensors
> for my L-jet box and would like to incorporate it in the front end of the
> buffers.
> Also interested in any comments regarding averaging O2 sensors for dual
> exhaust systems and idle performance (in line 6 engine)

The National Semiconductor "lambda sensor interface amplifier" specs
imply about 1.2M ohms to 0.45 volts.

-- 
Ludis Langens                               ludis (at) cruzers (dot) com
Mac, Fiero, & engine controller goodies:  http://www.cruzers.com/~ludis/
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