The first thing is the check engine light - been on for a couple of months. Hmmm. The light is telling you that there is a problem in the Emissions and engine control system, as determined by the "Engine computer/Powertrain Control Module". If the fault was just a glitch the PCM would have cleared the light after the problem wasn't detected anymore - it didn't.
Your Jeep has a diagnostic connector that will allow the computer-generated trouble codes to be read by a scanner, telling you what area(s) the computer says you have a problem in. Go to your local Autozone and have the codes read by them for FREE! If no autozone, call the local parts stores to see which one will do it for free. Your diagnostic system is called "OBD-II". The connector should be located at/under the bottm of the dash near the steering column, and is "oval/trapezoidal" shaped with two rows of pins, 8 in each row. Autozone can tell you what the fault codes mean - it won't guarantee a fix, but will point you in a direction.
Gas guage - possible sending unit problem from float in fuel tank, broken wire. Goes from tank to gauge.
If you can start and drive it, then the fuel pump is probably ok, just shutting down due to computer problems. Computer can also shut down ignition system - no spark. Get the codes! Please post what you find out/fix for other folks to learn from! Good luck.
Thursday, October 15th, 2020 AT 11:14 AM