O2 == 1.00? volts?

[xxalexx at ix.netcom.com]

With O2 cold the bias voltage has rather large contribution to total
output voltage.  With hot sensor or no bias you will probably never
see 1 volt.  You might try a 4 wire to see if grd. loop
>From what I recall the solenoids were run under 50% for durability
and better tip in control, (these were Carter with air bleed 
feedback)   
alex
> Yes Ford O2 will go over 1v seen on my bench with a scope.
> 
> Steve
> 
> Bruce Plecan wrote:
> 
> > ----- Original Message -----
> > From: Ludis Langens <ludis at cruzers.com>
> > To: Diy_efi <diy_efi at esl.eng.ohio-state.edu>
> > Sent: Thursday, May 06, 1999 4:58 AM
> > Subject: O2 == 1.00? volts?
> >
> > On a GM:
> > I've seen a few go over 1.00v, I think the record has been 1,06v.   I know 0
> > about the Ford stuff,
> > Bruce
> >
> > > Is it possible for an O2 sensor to output a full volt (plus a few
> > > millivolts)?  I thought they peaked out at 9/10ths of a volt or so.  The
> > > 1+ volts were measured with a DVM.  The meter's ground lead was clipped
> > > to the engine<->body braid.  The engine end of this braid is where the
> > > computer picks up the O2 ground.  This was on an EEC-IV w/ Motorcraft
> > > 2150 feedback carb.
> > >
> > > I got the 1+ volt reading just after starting a cold engine.  The temp
> > > guage hadn't even reached "C" yet.  This engine is freshly rebuilt - I
> > > was continuing the initial fast idle break-in after fixing a vacuum leak
> > > / major lean misfire problem.  At the time, the engine had 20 to 25
> > > minutes of running time.  Once the engine started warming up a bit, the
> > > computer took over and the O2 started swinging back and forth.
> > >
> > >
> > > In a related matter, what is the proper position of the idle mixture
> > > adjustment screws?  I assume that they should be set so that the
> > > feedback solenoid is running at around 50%.
> > >
> > > --
> > > Ludis Langens                               ludis (at) cruzers (dot) com
> > > Mac, Fiero, & engine controller goodies:  http://www.cruzers.com/~ludis/
> > >
> > >
> 
> 
> 
> 
>