Originally Posted by
RR|Suki
Our cars don't have wideband O2 sensors, so no can't be done.
Each of the four narrowband o2 sensors does report air/fuel information to the PCM. That's how your car manages its air/fuel ratio. You can retrieve that information from an OBD-II device. We used something like that last time my car was on the dyno.
Wideband o2 sensors probably wouldn't work with a scangauge anyway, because they're separate devices that don't report to the OBD-II system.
1996 Town Car Signature Series 4.6L PI Engine
2003 Crown Vic P71 5.4L PI Engine