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try turning the headlight knob left to right several times, and jiggle the switch at night. Also check your fuse panel should be a 10 amp or less fuse that says "Insr" or something like it.
Regarding your no spark condition....if your check engine light does not light up on the dash when you turn on the ignition, before cranking, then your jeep ecu might be in need of repair.
These jeeps have a safety fuel shut off in case of an accident. And a hard jarring can shut off. it should tell you where the switch is in your owners manual, All you have to do is press the reset button on it
Maintenance reminder light that's all it is, to reset needs to be done with snap-on scaner or OTC scaner. Most repair shop can do this for you for a small fee.
AutoZone can reset it (free)!
You can also disconnect the negative battery cable for 10 minutes, or so. It will reset the engine maintenance light; however, your radio and clock may need to be reset.
It is possibly the O2 sensor. I had some issues with early 90's 4.0 liters where the O2 sensor would stick rich under heavy acceleration and would cause it to lean out and bog down. It felt like a rochester four barrel flat spot on an old chevy. I hope this helps.
It's a module under dash programmed to turn on Maintenance light. You can pay $80 to replace module or pull wire going to module and save $80. BTW, it's there to tell you to replace your Oxygen sensor.
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