I logged the averages for the narrow band O2 sensors and most of the voltages are below 600 some as low as 50 and there are none in the 800's to 900's range. My LTFT's are averaging -10 across the board. I have a 99 camaro 4L60E trans with the 3800 engine. Do I need to poSsibly replace the O2 sensors. I can usually smell unburnt gas from the exhaust so I know the car isn't actually running lean. Any help and or suggestions would be great.
Thanks