O2 sensor function

[Bruce Plecan]

-----Original Message-----
From: Squash <mpc at genevaonline.com>
To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
Date: Tuesday, April 07, 1998 12:36 PM
Subject: O2 sensor function


>Very simply, will a heated oxygen sensor read accurately over 50%
>throttle? 

Yes, but it's accuracy is just lean or rich.  Once properly tuned it
can be a "reference" for mixture.   You first need to know what the 
engine likes, ie 850mv.  Don't tune to a specific v, your engine might
like more or less.  Use it as an aid, not as proof positive, that you
are at x value AFR.

 If so, would 65 mV at full throttle be to lean?


I wouldn't run there with a BBC, on gasoline.  
 
>Andy Quaas
>
Cheers
Bruce