need help bad

i have a 92 gtc and yesturday it was running fine and all of a sudden it started dieing and spiting and sputtering and would only run at full throttle and that would run like crap i dont know if i have bad gas or plugs but i am almost ready to give it away but i love ,my car to much please help

First check that all of your plugs are getting spark and gapped properly. When was your fuel filter last changed?

This could be a fuel flow problem or your equivalent of a slipped carb linkage adjustment - which I had happen every so often with my ford van. It can be a fuel pump, fuel filter, or fuel pressure regulator. Check some of the odd manuals for these cars and engines but do expect some of them to have half of what you need - so go to another manual.