My 1995 Toyota Camry will start after sitting for at least a hour. Once it starts, I can drive it for about 15 to 20 minutes. When I try to start it again, within a matter of minutes, it won't crank. It turns over fine, but won't crank. After about a hour, it will start right back up. What could possibly be wrong? Coil?

Replace the coil--go OEM. If the problem persists, replace the Ignition Control Module (ICM).

I've seen the distributor cause this. The signal generator inside goes open. Just pull the connector and do a resistance check cold, then when it quits, do the same again and you'll see infinity.