1995 Chevy Lumina car problem

Hi - it's kinda hard to make a very good guess. Your description is a little bit vague. I'll ask a few questions instead that might help us help you.

Sounds like you can start the car up, drive, and after it gets warm it begins to stutter - correct so far? And after it's warm & stuttering, you're having a performance problem, unable to accelerate.

Then after you've let the car cool down again, it will start up & run normally until it's warmed up and the performance problem returns.

Is your instrument panel telling you anything? Engine temp light or gauge seem normal? Have you had the 'service engine soon' light come on recently?

Any unusual sounds coming from the car? I'd be most interested to know if the exhaust sounds rough.

Pay attention to any other details/symptoms the car might be providing you. You are our eyes & ears, so our ability to help is dependent on the information you can provide.