Fluctuating idle and slight miss, 5th gen. Please help. Options

[92-gt]

Ok, so I havent gotten any help on the other forum that I regular, so I figured I would ask here as well.

I have a 1992 Celica GT with a rev 2 5sfe.

Friday I was driving up to my college and it seemed like it was running ok. When I was cruising though, and kept my foot at a steady speed, it seemed to jerk a little bit. If I gave it a bit more throttle it would be ok, or if I let off it would be ok.

When I came back outside to leave, it idled really low, and died, but I managed to limp it home ok.

I swapped TPS's with my 6th gen, and it idles a bit better, but it still fluctuates and misses.

All of my vacuum lines are ok.

I checked my IACV and it is not plugged.

When I am at idle sitting still, and I rev it up, if I slowly rev, it seems like it misses, but if I do it quickly, it is ok.

Any ideas of what it could be?

Could it be a bad o2 sensor?

I need to get my car running properly because I have to go to college, and I dont have a transmission in my 6th gen yet.

Please give me any ideas that you guys have, I would really appreciate it.

Thanks
-Ryan