im having the same problem with my car, cept mine is a 92 dx hatch. ill be accelerating, and it juss stops acelerating and actualyl slows down the car, then ti just takes off and accelerates. Its happens uphill, downhill, cold, warm, night, & day. i dont know what it is exactly, i changed the furl filter, checked the cap n rotor, exhaust n intake r definately not clogged, my best guess is a sensor is wrong,

the only thing that confuses me, whenever this problem starts its like the engine loses the power to pull the car, yet it is able to rev without a problem