What are signs of a wideband O2 sensor going bad?

As of right now I am using a used zeitronix wideband unit and during constant throttle under low loads the afr will shoot up way lean randomly. Would this be signs of an O2 sensor going bad?

 

When my sensor went bad it just read 14.7 all the time.

 

yeah mine did the same ****. swapped out the sensor fixed it pretty much. sometimes it still happns though. but got MUCH better

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SwappedTURBOegg &raquo;</TD></TR><TR><TD CLASS="quote">yeah mine did the same ****. swapped out the sensor fixed it pretty much. sometimes it still happns though. but got MUCH better</TD></TR></TABLE>

Did the same thing as what, constantly reading 14.7 or reading erraticly?

 

ive heard that they read stoich all the time like people are saying...


however i had one go bad and it was reading about 2-3 full afr points lower that my motor was actually running. if your concerned, its definately not worth the risk. hit a dyno or get a new sensor

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by aw1234dude &raquo;</TD></TR><TR><TD CLASS="quote">

Did the same thing as what, constantly reading 14.7 or reading erraticly?</TD></TR></TABLE> it was reading at WOT 11 20 11 20 11 20 really fast. swapped the sensor fixed it. i get spikes sometimes though im not sure what thats about, anyone know?