Re: Jeep just died
Eventhough a loose connector can not be discarded, you have now two faults, probably caused by the same problem:
1, the engine which shuts of and 2, the fuel gauge which shows 0.
Both problems are mostly caused by a PCM which has a shorted 5V sensor feed. (used to feed the crank and cam sensor, the TPS and MAP sensor)
Due to this short, the PCM will not send any info via the PCI data bus, like the fuel level and batt voltage. The crank sensor is well known (or better, infamous for) being faulty at one moment, while shortly thereafter working normal again.
If the fault is hard, its easier to troubleshoot, because you just remove the connectors from each sensor one at a time, until the fuel level indication returns.
Intermittent faults are a lot more difficult to troubleshoot, because you never know if a problem was solved doing some action, or that the fault was just not there at the moment.
Also a faulty PCI data bus could give the same symptoms, but i would first try the other options.