O2 sensor pullup resistor values?

[Peter Florance]

That's what I had in mind. Some decent rail to rail op amp

Thanks
Peter

-----Original Message-----
From:	rr [SMTP:RRauscher at nni.com]
Sent:	Thursday, December 06, 2001 8:50 AM
To:	diy_efi at diy-efi.org
Subject:	Re: O2 sensor pullup resistor values?


You may want to use two O2 amps (National semi) and then sum
the outputs together. In my travels w/GM ecms I've never seen any
pullups or bias resistors on the O2 sensor signal line.

BobR.


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)
> Thanks in advance
>
> Peter Florance
> 81 euro 528i w/ 3.5L
>
> ----------------------------------------------------------------------------

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