loss of power on 1995 Geo Prizm

my geo has been missing sometimes (but not all the time) when i accelerate either from a dead stop or while moving. today it developed a loss of power. today it lost speed on a hill where normally it will pick up speed. on steeper hills it is really bad. on level ground everything acts normally.

Asked by for the 1995 Geo Prizm
I would start by looking at the ignition system, the distributor cap, spark plug wires, and plugs. The ignition coil(in the the distributor ) may be failing, Pull up each spark plug wire (engine off) if oil is present the valve cover needs to come off to replce the spark plug tube seals.
2 answers
Did you ever get this resolved? My 93 Geo does the same thing...but it doesn't misfire it just wont accelerate at all in a low gear on a slope. As soon as I hit about 25MPH it kicks in and accelrates fast wear I have to ease off the gas pedal. I think its some sort of shift solenoid or Vehicle Speed Sensor. But I am not a mechanic just so you know.