When I do a live read on the car with Auto X-ray my O2 sensors are all over the place. They read from 80 mvolts to 900 mvolts changing constantly, But when I read from a memory they are around 480 mvolts when car is warm.
Is this normal? I have replaced then about two weeks ago. Did not have the auto X-ray before.

Thanks,
Mark

 

Normal. They constantly change when monitoring them in closed loop. When you look at them at WOT, they will stay relatively still.

 

Thanks, I was hoping to find something wrong. But no codes and the other things look good. Car runs fine. uses no oil Compression is good. Car just dose not have the power of other Z28's. But hey it dose have 150,000 + miles on her. I just need to be happy