Mine is a manual. The tranmission, clutch, other driveline is a non-issue. Strictly power and with a surging either back pressure from the exhaust, not enough air, not enough spark, or not enough fuel could only be causing. Since I've check 2 out of the 4, that only really leaves the two others, and I've sniffed out all the sensor related causes for back pressure, outside of a cat, then its on to fuel. I'll let you know.
It's not my daily driver, and since I'm starting the lemon law on my saturn, (whole other story), I'm driving the jeep a lot to work and noticing the problem that could have been present. Since I've joined this forum, I've only put about 5-6k miles on it.