I too have a 1995 Jeep Wrangler and experienced a similar problem with power steering about 3 years ago. It would seem that my pwr str would start to fail kinda. Jerky turning and sometimes as if none whatsoever. A guy at the gas station told me when sitting idle with engine running turn my steering wheel all the way left until it whines, hold for about 5 secs and turn to the right and do the same. I tried it and have had little or no trouble since. I always do this before I change fluids and lube. Seem so work for me!!!