1998 Saturn SW2 Cuts off while driving

I have a '98 Saturn SW2, and here's the problem. I can get in it, start it up no problem, and drive for about 2 to 3 miles with it running perfect. Then it will just cut off, with no warning, usually while I'm doing 45 down the road. A couple of times when it did this, while I was just staring at the rpm gauge in disbelief, wondering how far I could coast, it just came back on. Once it starts cutting off, though, you wont be going much further. If I sit and wait, it will start again after 20 or so minutes, but doesnt get far. It will only go the 2 or 3 miles if you start with it cold. I have replaced the fuel pump, the fuel filter, and the ignition coil module, since it was discovered that no spark was getting to the plugs when it stalled, and both of the coils were tested and were fine. Any ideas as to what I'm dealing with here? O yeah, I also tried a code reader, which gave me zero codes to work with. One other interesting discovery that I made last night is that I can tell when it's getting ready to shut off, the rpm's drop slightly and it feels like it's going to start running rough, but doesnt get a chance to before it cuts off. In this split second or 2 before it dies, if I give it gas, I get no acceleration, just a gravelly sound/feeling from the engine. Then I'm on coast-mode. Thats the best way I can explain it, believe it or not. Please, please, PLEASE HELP me with this hoopti