I have a 1992 jeep wrangler. the engine will not turn over. the battery seems to be fine, lights and radio work. checked oil and antifreeze those are full. stared fine this morning. no noise of any kind when i turn the ignition

Sounds like just a flat battery to me.?
Booster-start should get it going, or take the battery out & get it recharged.?
Best of luck

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.

Have you checked your ignition coil and starter? If you have good battery and you can hear the starter turning but the engine itself wont turn over than you have a possible frozen engine? Check the block to see if it cracked? Check to see if you have an oil leak from the head gasket? Also if it has overheated this will also cause the engine head gasket to blow and seize up.

that is the engine management system checking itself,thats what its supposed to do.

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.

bad contact at battery cable or ground cable.
bad cable, check volts at starter when it wont work.

Have the starter checked out. A faulty starter will mimic a bad battery or bad alternator in that it will start the car/truck fine when it's cold but when it gets hot, will act like there's no power. The lights horn,radio will work but won't start because the starter is hot and requires more power to function. Best of luck.
Greg

ck the engine to body ground.located back side of engine and srew to firewall.

pull on the end of the turn signal away from the steering column

check fuse #17 in fuse box under hood. It's a 10 red fuse. that's how i fixed my problem.