O2 == 1.00? volts?

[Bruce Plecan]

----- 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/
>
>