Low O2 voltage

[TYHOGG]

Does anyone have any ideas on what to check or fix my low 02 sensor voltage? I relocated the battery to the back a while ago, but just removed the cable that went from the back of the head to the battery then to the frame. I have a ground strap on the other head to frame. I'm wondering if i'm not getting good ground and need to add another strap or 2. Does anyone know if this would solve the probelm, or is this something that happens when the sensor starts to go bad? It only seems to happen when coming down on rpm towards idle. Like when you stop at a light. This is the last hurdle i need to fix to get the truck 100% streetable.

Thanks for the help,
Adam

 

[bezerk]

Re: Low O2 voltage

bad o2 sensor?

 

[sly dvl]

Re: Low O2 voltage

Sensors are pretty cheap. If it's old I'd replace it, since it could be reading incorrectly. How are you reading it? What are the cross-counts @ 2000 RPM? You could have a vacuum leak causing it to go excessively lean (low voltage) at closed throttle/idle.