If once it stalls can you restart it? If not then see if the gas is missing or the spark has stopped. If you can restart it immediately then check the fuel pressures. Could be a low pressure from the puel pump or a clogged filter. As you run the car it cant feed enought to keep it going. But when starting the system has already built to pressure and filled the manifold.
If this doesnt help try repeating the question with some points filled in.
Thanks
Jonathon
weak fuel pump.
check for a vehicle theft system?? Is the Light Illuminated. does it stay on:::
My car starts and runs fine .Yours may need a fuel filter or pump.
sounds like a fuel problem change the fuel filter first
check you ecu under the kick plat on the pasanger side then you might have to change you ptu
dd
The fuel filter is clogged or the carburetor needs to be cleaned and/or adjusted.
get a new engine DUMMY!
Its out of gas
To answer your question I need to know the year model of your Chevy Celebrity as well as the engine that it has in it.1996 chevy calavlier 2.2
lack of fuel
check ignition