what voltage readings should i be seeing from my 02 sensor??

what voltages correspond to a rich or lean mixture?

thanks

 

from what others have said, anything over .82 is rich, Ideally you want to be around .87, .89. Mine is at like .95. SO it is really right now. I don't knwo for sure on these, just what I have read. But this week I am going to dyno and going to use a wideband o2, so I'll post here if it differs from what I said.

 

When Peter Farrell tuned my old PFS PMC, he said that with the stock O2 sensor, you don't want to be any lower than .84 to .86, thats atleast what he said he felt comfortable tuning a car with when a wide band sensor isn't available. I used my O2 sensor to try to get to .90 and quite since I didn't want to push my luck goin gany lower. So now I sometimes get .88 at WOT through 4th gear, but normally stays .9 to .92 in that range.

Tim Benton