Hello, I will try to help. usually this problem can be associated with 1 of 2 things, Either the vehicle has lost fuel delivery, or has lost spark. One thing to check, is fire to the spark plugs with a spark tester at the time it won't start, if you don't have any spark to the spark plugs when it won't start, Then I would try another ignition module and stator. The ignition module is bolted to the side of the distributor with 2 5.5 mm bolts, you have to have a 5.5 mm socket or you will not be able to get them out. (FYI). The stator is inside the distributor and the distributor shaft has to be taken out and the gear knocked off the distributor to renew the stator, it's not a hard job, but alot of people will just opt for a new distributor rather than rebuilding the old one. If fire is present at the plugs, You may have a failed fuel pump, or fuel pump relay, or possibly the PCM itself. (Powertrain Control Module). as the PCM grounds the fuel injectors, I would also install a fuel pressure gauge on the fuel rail and see if I had fuel pressure when it wouldn't start. If no fuel pressure, I would trace the fuel supply system. If no spark to the plugs, I would renew the stator and module. Make sure the coil isn't broken and the spark plug wires and coil wire are intact.