Won't Start!!!

[mustang93]

We played with that car all day today (Sat 4/24). We changed about 5 different computers today. A friend of mine thinks I need to get a computer called an A9L (????). But we did fine this out today. IF you crank the car and let it run for a few minutes and than cut if off, it's not going to crank. But if you disconnect the fuel pump and try to crank it, it will hit like it wants to crank. After doing that you can plug the fuel pump back up and than it will crank. That is why we think it has something to do with the computer. One of my friends has a Snap-On Scanner and it would not work on my car. If you turn the switch on in my car the computer (SCANNER) goes off.(????) That's another reason we thought it might be the computer. We can plug a computer that doesn't have mass air on it an the Scanner will stay on. The car will run but it runs poorly. Do you know if this car has a COMPUTER CONTROL RELAY????