been scanning my car, and i'm thinking my o2 sensors are getting bad.

but i don't want to replace them if they are not...i'm pretty tight on $$

watching the scanner it seems that my o2 reading jump all over the place when just sitting at idle.

i've watched the millivolt readings and each bank seems to jump around from 100mv up to 900mv and everywhere in between.

and it always seems that one bank is really high, while the other is low (in that range). but then a few seconds later it will reverse.

IS THIS NORMAL? for all i know this is the normal range.

thanks

 

normal, it's called switching.

 

ok...

so what is the actual range?

for all i know the normal range is 100 to 10,000 which is why it doesn't really make much difference having them "switch" a few hundred

thanks al

 

they will switch back and forth at idel only way to read then is wot and then they will stablelize.

 

They are cycling which is completely normal. 100 - 900mv is about the range.

 

thanks guys...

hmm...dont exactly want to sit at wot in my driveway...guess i'll try something else.