Leading guestions+1

[Mike Rolica]

Ya that would be the limiting factor :-)
Scanning over c/l and o2 paramaters, it is possible to change the window and
the r/l setpoit volts.....in theory you caould have it cross over 1volt if
ya wanted to...
Can't find any value for the bias voltage.. would be interesting to tinker
with it on a bench and see if the bias voltage changed buy mod any of the
paramaters....

Correct me if I'm wrong.... But as long as the current stays the same.. you
should be ok.
Mike Rolica
Plant A,
Magnesium Products Division
Strathroy

(519)-245-4040  Ext. 244



	-----Original Message-----
	From:	Bruce Plecan [SMTP:nacelp at bright.net]
	Sent:	Tuesday, August 15, 2000 8:24 AM
	To:	gmecm at diy-efi.org
	Subject:	Re: Leading guestions+1


	> Bruce Plecan wrote:
	> > If, I was to have a O2 sensor that worked at a different range
of
	voltages
	> > then the gm use, could I just use a comparator at the new Os
voltage
	level,
	> > and use it to switch from .1 to .9 volts, as it crossed it's
14.7:1?.
	> I don't think so.  GM likes to compute a long term average of the
O2
	> voltage.  This average is used for some of the fine tuning during
closed
	> loop.  The target average is specified in the PROM.  In one
application,
	> this value changes between just about every PROM version.  A
4-speed
	> PROM has a different value from a 5-speed PROM, and both differ
from an
	> automatic PROM, and so on.
	> You might be able to insert an analog amplifier (or voltage
divider)
	> between the "new" O2 and the ECM's O2 input.

	Anyone happen to know what the max O2 voltage is before the ecm lets
the
	smoke out?
	Or what the max O2 diacom will record.
	Grumpy


	
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