I have been dealing with these O2 sensors that I bought cheap and they obviously suck, I get it. But here is my question

I tested the few old sensors I have laying around and the results where this.
When red hot under the flame, the numbers would fluctuate between .400V and .800V...
It would not get up to or near 1.000V...

Do these results indicate crappy product??

What should the numbers be doing?? Should the numbers stay around 1.000V steady when red hot??

Thanks

 

No that's about right, if my OEM are any good. I just know that the cheap ones don't work for whatever reason. That's what I have read anyway. Maybe being that it's a Bosch system it has trouble syncing with products other than Bosch.

 

OK.. so if the DC volts are bouncing all around and usually equal on both sides of .500v that is a good read??

I never got it up above .800v