What would cause a 94 lumina to start dying Everytime it idles or slows down . And kinda hiccups during acceleration.

What is your question?

When it first starts seems to run fine after it warms up seems to die at every idle position or slowed speed when parking, when it's moving at actually speed seems to do fine but does hiccup from time to time , I've cleaned the mass air flow checked for vacuum leaks replaced battery

What makes this problem better or worse?

Worse when the engine warms up

How long has your 1994 Chevrolet Lumina had this problem?

It started about two weeks ago in seems to be happening at almost every stop now