1994 jeep wrangler engine missing at mid range

run the fault codes. check the serviceability of the cat converter as it may be broken inside and blocking the exhaust

skipped filters?
hiccup.s can be lots of things,
so tell when the hicup ,er misfire happens
hot or cold engine. ? or both.
at any speed. , only fast right foot?, or only wide open throttle?
only on hills. ?
so far , no miss at idle or slow speed.

If there is no check engine light coming on, this could be hard to diagnose. IT could be the crankshaft position sensor. I doubt that it is fuel related because it is an instant response to a bumb

When it warms up and acts up disconnect the ECT,(coolant temp sensor) it mounted toward the rear of your alternator, see if there is any difference,also inspect the hose at the map sensor make sure its not torn on any ends or kinked,

1994 Wrangler with 200,000 miles on the odometer. Similar problem here: Severe bucking and backfiring, and engine misses when traveling down the road. I did an entire tune-up (plugs, wires, distributor, distributor cap, and ignition coil), but got the same thing. I thought it was dirty fuel injectors, so, I poured a bottle in a few times on fill-ups. The final solution, was a bad alternator. My mechanic said it was sending voltage spikes to the computer, causing the engine bucking and back-firing problems.

check the throttle possioning sensor on the throttle body that can cause alot of things

That could definetly be the problem.
But they also had a problem with the wire harness that runs along the RH passanger side shock tower. wher the harness goes from the body to the engine. sometimes the wires get broken internally.
To test this theory , start the car and grab the harness, wiggle it and bend it around with both hands while listening to the engine to see if it changes better or worse.

you check for miss how is compression

I'm not sure if your Jeep has this or not, but you could check with your local Chrysler dealership. Some vehicles have a sock filter in the gas tank to filter any debris before it is delivered to the engine. What sometimes will happen is, you vehicle will start and run until debris clogs the sock filter and it will die. After the vacuum on the fuel line is gone the debris will fall free from the sock filter back to the bottom of the gas tank. Then when you restart the vehicle it picks up the debris again and clogs you filter again. This happen to me once and I have to remove the tank and clean the debris out and install a new sock filter. Good luck.

'till you do some in depth testing of all systems, I'd place equal weight on every possibility. Make sure you cover the basics like fuel filter etc before getting crazy with it though. Also check cap. rotor, coil and wires. Idle cylinder pressure is different than that encountered when driving. This additional pressure will cause ignition spark to seek a better easier ground,(not the spark plugs where it should be going) causing missing under load.After checking , if you haven't found anything, its time to begin testing fuel pump pressures, modules and controls.
good luck