93 civic crank no start

We have a 93 Honda Civic 1.6L that was running just fine. It just started stalling on Us the other day. It took about 5-10 minutes to start back up. It ran for another 5 minutes then stalled again. My boyfriend replaced everything he can think of. Fuel pump fuel filter spark plugs new distributor wires. It still stalls. It has spark and fuel so we don't know what the issue is. Does anyone have an ideas?

I've got a idea. One of the two things you mentioned stops working. If you have no engine light then it is not a sensor. Could be anything from a faulty fuel pump relay to a loose connection on the ignition switch. Instead of boyfriend being a parts changer buy him a test light and the next time it shuts down leave the key on and test for power at the coil and fuel pump feed, it is one of those.