The ScanGauge-II is an all-in-one auto computer, allowing you to monitor live data streams from your vehicle’s Powertrain Control Module (PCM)

Experimenting with ScanGauge II in a Ford PWM application

The ScanGauge-II is an all-in-one auto computer, allowing you to monitor live data streams from your vehicle’s Powertrain Control Module (PCM). The system comes with eighteen built in gauges, enabling you to monitor everything from intake air temperature to battery voltage. Although some features do not work on all vehicles, such as fuel pressure monitoring in my case, depending on your vehicle manufacturer, you can use the X-Gauge system to monitor vehicle specific features, such as cylinder head temperature and fuel level. You can also program up to 25 additional gauges through the X-Gauge system! X-Gauge commands can be found on the ScanGauge website.

In addition to the gauges, the unit also works as a code scanner, allowing you to read and clear fault codes, should the Check Engine light come up. There’s also a built-in Performance Monitor, enabling you to track your vehicle’s performance with real time measurements.

Last but not least, trip monitoring allows you to keep an eye on your fuel consumption. Although this isn’t a feature I’ve really experimented with, it does take up to three fill ups to be accurate.

With the infomercial out the way, I’ve been using my ScanGauge-II to monitor different aspects of my ’01 Mercury Grand Marquis over the past few days. The digital RPM gauge was a nice touch, seeing the vehicle wasn’t equipped with one from the factory. I’ve found setting the data feedback rate to the fast setting worked best for this. But the additional Ford-specific X-Gauges were definitely worth having. I’ve found the ability to monitor aspects such as transmission fluid temperature and cylinder head temperature very worthwhile, although fuel pressure is one thing I haven’t been able to monitor. The built in fuel pressure gauge wasn’t compatible, but neither was the Ford specific fuel pressure X-Gauge. The Ford specific fuel level X-Gauge is also pretty cool.

That said, features I have been able to monitor with the standard gauges include intake air temperature, coolant temperature, throttle position sensor, horsepower, battery voltage, ignition timing, RPM, vehicle speed and engine load. Features I have not experimented with include total fuel cost, cost per mile/km, instant fuel economy and average fuel economy.

All in all, this is a unit well worth having. The price may seem a bit steep, but with the wealth of information it provides, it’s worth its weight in gold, especially for DIYers.