Originally Posted by JDLuke
And it works like a charm.
I discovered and cleared an O2 sensor fault code, verified that the ABS unit had no complaints, and watched real time data while I idled the engine and fiddled with the throttle and such.
I am relieved to see that my GPS does in fact under-report the battery voltage, so I don't have some sort of problem there.
So the 911 will tell you if your battery is on its last leg?