My 1993 Ford Probe Won't Start

Hi, I own a 1993 Ford Probe GT. My brother was driving it when it all of a sudden just cut out and stopped moving. My dad and I have been working on it for about 4 days now trying to figure out why it won't start. It turns over but it doesn't really "fire". We have put a new module in it, externally because that was my dads initial thoughts that it burned up. We got a new battery because we had heard that if you don't have 12 volts to the injectors they won't properly work, he has gone through all the fuses and none are burned out, except the one for the interior electronics (lights, cd player, etc.), If you put a multimeter to it and then use the carpet as a ground he gets a reading. But now we have moved to the fuel pump and have already pushed the red button but that wasn't it, that was the first thing we tried. Anyways hopefully I have given you enough information to help me. I would love input to help me, I love this car and would very much like to have it on the road.