1994 Cadillac STS acceleration

It only happens right after being refueled and in between refueling but not all the time. I try to accelerate and the car sputters and bucks like its not getting any gas. It even sometimes dies after a couple of episodes of it sputtering and dying I replaced the alternator and battery I also treated my gas tank and injectors with a deposit solution but it didn’t get any better the only thing I can think of is either the spark plugs fuel injectors or the gas pump isn’t working right it’s like it has a mind of its own when it wants to cause problems because one day it will be fine the next it goes crazy or it is running great but if I turn off the car or I'm driving and start to accelerate it does it again and I have to slowly accelerate but that doesn’t always work. What do you think?