Car hesitates/stutters, sometimes dies, tough to restart...HELP!

[Stardust]

My 1991 NX2000 has started acting up on me. For the first couple days the only symptom was stuttering at highway speed. It would surge and hesitate above 60 mph. After a day or so it started repeating the same at lower speeds and then the next day I had the car die on me during a 2nd to 3rd shift. I pulled over and it cranked back up just fine. I was in the process of packing and moving and couldn't really do anything about the car at this point.

Once I got done moving, I changed the distributor cap, rotor, and wire from distributor to coil. The wire from the coil to cap was messed up on the cap side pretty bad, and was partially broken off and melted inside the cap. I thought for sure that was my culprut. Now the car just died on me again at the store. I got some help pushing it and dumping the clutch to get it going but anytime I shifted and the rpms dropped, it wanted to die on me. When I got back, I left the car running in neutral for a bit and noticed it started hunting at idle. It would drop pretty low and then head back up to around 1750 rpms and just all over the place.

Can anyone help give me some suggetsions? I'm getting tired of the car at this point and don't really want to shell out the big bucks for a repair shop since it's most likely something simple I can replace/fix on my own once I figure it out. My initial thought during the surges was maybe an injector was partly clogged or bad, but with the new symptoms, I don't see how that would kill the car and make it hard to start.

[Stardust]

More info:

I don't think it's injectors because I read that I could unplug the connection for them one at a time and see if the idle change is much different for one than the others but they were all just about equal.

Fuel filter, fuel pump, and O2 sensor have all been replaced relatively recently so it shouldn't be any of that (enough that they are still well within regular usage limits, but also broken in as well).

It honestly seems like the problem magnifies as the engine gets warm...the car sat all day yesterday to today and started fine...it only didn't want to start after running around town and then stopping for a few minutes...then when I got back I let it sit for a few hours, went back outside and it started fine and idled fine for a few minutes.

[splintercell]

i had the same symptoms.found out the alternator went bad and wasnt charging the battery properly,replaced alternator,everything back to normal