Start - Chevrolet - Lumina - Sparkplugs :: 1990 Sedan Won't Start / Engine Die When Pushed Down On Gas Pedal

1090 Lumina Sedan 3.1 ... First time it had starting issues Recently. About 2 months ago my lumina's engine would die when i pushed down on the gas pedal. After 2 days of trying to fix the issue it wouldn't start at all, i replaced:

TPS
MAP/MAT Sensor
Fuel Filter

None of these worked so i sent it to a shop, they replaced:

ECM
Multi Port Injection (All 6 Injectors)
TPS (even though i had just installed a new one)
Serpentine Belt (it broke when they were test driving it after the Repairs were done)

The car would not start even after they replaced the first 3 parts on the list, so the tech looked further at the engine and found frayed and open wires, on the bottom near the front side passenger door, he repaired these wires and the car started and ran.

The only issues i had after their repair was a rough idle while braking and/or when i was at a full stop, the rough idle went away after a few days of driving.

((Current No Start Issues))A week ago i had what i am guessing is a few electrical issues: Speedometer Twitching and then dropping to nothing while driving, temp and oil light popping on and then off, when the engine was at a good temp and the oil was fine when i had checked the day before.

I went out a few days ago to run some errands and on my way home i turned a corner and when i put my foot down on the gas pedal the car just went "Put-put Put-put" every time i pushed the pedal more than a 1/4 of the way down. i reach a stop sign and being i was in the middle of nowhere and no one was coming down the road for miles i braked slightly and went past the stop sign halfway through my turn the engine died and i coasted to the side of the road, i got out and checked the engine, i had coolant not a whole lot but enough, then i checked the oil and it as far as i could tell it was at the add line even though it had been fine a few days before,(there has been no indication of an oil leak).

I rechecked the coolant and it looked like there was more in there than there was a few minutes before but i couldn't be sure, i was able to get the car restarted and headed towards home (about 2 miles away).at this point i was able to get the car going at around 25-45mph on the next sharp corner i turned the engine died again so i restarted and kept going, it died once more right before i reached the driveway but i was able to coast the rest of the way, once i parked the car i turned the engine off and tried to restart it a minute later and it started again so i left it be and called someone to bring me some oil, when they got to me with the oil i put some in and and it would not start at all.

- I checked one of the spark plug wires and it is not getting any spark.
- The ground terminal on the battery seems to be stripped
- The battery / altenator / starter---- All read to be between 12.15 and 12.36 volts
- The head lights, instrument panel and such still turn on properly.

I'm at a loss here, it was just in the shop 20 days ago and now it isn't working again. I would prefer to not have to put it back in the shop, if it might be something i could repair from home.