O2 datalogging question

[L0G1C]

Should the O2 sensor's voltage reading fluctuate wildly or should it be relatively constant? When I'm driving my car, it bounces rapidly from low-reading to high-reading, and I'm getting mad knock (datalogger reads 43 counts or whatever) whenever I'm accellerating at all.

 

[paul s]

The O2 voltage will go up and down as you drive and when WOT it should stay steady around 0.92V..

 

[L0G1C]

Even when I'm sitting at idle, the O2 reading is wiggin' out... is that supposed to happen? The sensor is brand new, it hasn't even been on the car for a month yet. I replaced a bad one with a new Denso and I'm not having any CELs come up...

 

[paul s]

At idle the O2 will cycle up and down. thats normal..

 

[frigginlazer]

at WOT it is around .92?? uh oh... This could be bad I guess, as mine goes to .00 at WOT.

Which way is lean and which is rich?


Mike

 

[paul s]

0=lean, 1=rich

 

[frigginlazer]

I guess that is why my engine is knocking....