Eractic O2 sensor

[Bob Valentine]

At 06:09 PM 12/17/99 -0800, you wrote:
>    I have built Dave Morrill's O2 sensor on the efi332 web site, hooked
it up
>to my chevy truck.  At all throttle positions except full throttle the
reading
>on the O2 sensor meter is extremelly eractic.  It moves from 1 to 5 faster
>than i can see it! But while at full throttle the reading is consistant at 5!
>Why would it be so eractic off of full throttle?

I just had a simular issue with my own 02 sensor display.  My problem
turned to to be grounds - bad engine to body ground strap fixed about 80%
of the problem.   Grounded the exhaust pipe to the frame, solved the other
20% of the problem.


--> Bob Valentine
--> bob at tecmark.com