An O2 sensor is a vital part of a "closed loop" computer controlled fuel system. By itself, it's worthless, unless you can blink fast enough to read its output at least 10 times per second. I taught computer fuel systems for 20+ years in the public education system and a series of private seminars.

"No Comment" on Deve.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!