1989 Chevy Beretta won't start

Engine Mechanical problem
1989 Chevy Beretta 6 cyl Front Wheel Drive Automatic

ok my car will not start last fourth of july I left the dey on in the car while trying to get my negative terminal bolt screwed in but as I was doing that every time I lost connectiion there was a clicking sound over and over after I got it screwed back on it started but was acting funny I got on the highway and got to about 55 mph and it wanted to hold back like it had no power and died got it towed home and so far I replaced the computer, the module and all three coil packs, battery, and crank sensor it has gas and i'm getting spark, fuel pump primes up I can hear it, got the pressure tested and it getting about somewhere between 28 and 35 psi not sure if thats enough but it sounds like it. It will start a little bit now when it wants to but then dies in I let it run or I touch the gas pedal. No fuses are blown and I didin't get the manual for the car when I got it or the fuse box cover so I don't know if i'm missing any fuses it ran just fine when I got it last feburary but now it won't work at all and me and my friends can't figure it out would you please help me