I finally got my HP tuner, and decided to do some scanning before I do anything. Well I scanned my car all the way to work (about 70mi), and then reran the saved scan. I noticed my O2 sensor is all over the place. It oscillates like a sine wave. It goes from about 63mV to 850mV back and forth really fast. Is this normal? I thought the O2 would read relatively steady dependant upon throttle.
I dont have a check engine light on either. I have not scanned for codes yet not sure I will find anything if I do.
