Car stalls without warning?

I have a 2000 Cavalier that I purchased from my mother. She had own it since 2001 and the problem was occuaring then. The car will stall olny at highway speeds. It does this spradically and does not matter if you drive it 1 mile or 50, it does not matter if it is hot or cold and sometimes it does not do it at all. When it stalls it will loose 20mph or more before it comes back on. If you step on the gas it sounds like the motor is trying to run, also if you cycle the key off than on it will start going again. It has been on a computer twice, the second time it said it was fuel filter but it has been changed. Any Ideas

All electric components stay working. But it does have a remote car starter.

Driving and then engine dies and shuts down, everything else still works. Pull over and restart then go. Some times good and some times dies again.

Great, so if my pressure is low, I should replace?

Thanks for the info, have already replaced the fuel filter.
One of my mechanic friends told me had the same problem, and it turn out to be a faulty wire from the egnishtion directly to motor. Thoughts?

Thanks again, and happy thanksgiving
from rick, calgary ab canada.

My son's 2000 Cavalier stalls unexpectedly after it warms up. It will stall and coast to a stop and will restart after an hour or so of sitting.

We changed the fuel filter and checked the fuel pump to find that it is operating properly. The car now has started to overheat.

Is this caused by a cooling system problem like a collapsed radiator hose?

Ran my 2000 cavalier out of gas today, put gas in and now its 8 hours later and still will not go. Was running/driving fine till ran dry but now the only way to gey it to run is pour fuel down intake. Fuel pump runs, car turns over fine but whenever I turn the key on I hear like a bubbling in tank. When I manually feed intake with fuel it starts and runs untill that fuel is burned up then stalls again and wont start again till I repeat process

Engine Performance problem
2000 Chevy Cavalier

My car starts, turns over and everything, but shortly after, the engine dies. What is it and how do I fix it?

The battery light and the engine fuel light are on, but I've jumped the battery and all my lights work. I've checked the oil and I've made sure there is gas in the car. I jusy had it sent to a repair shop and they said it was fine. I drove home fine and an hour later, the same problem happened. I honestly have no idea.

What is the milage? Do you have a loss of power as well. Not sure it is the fuel pump.