How Do I Dial In The Right Air/Fuel Ratio For Today's Oxygenated Fuels Using A Wideband O2 Sensor? Q. I am installing a wideband oxygen sensor and am curious about what A/F (air/fuel) ratios to ...

There's a special O2 sensor socket that should be used, and you have to be certain of the sensor location. On the 4.7-liter V-8, there are four oxygen sensors.