My 1994 Ford Ranger 3.0 L V6 onl;y has 100,000 miles on it. Sometimes when I drive it I will go like 10 miles or so and then if I park it and try to start it again like two minutes later it won't start. It will crank over but not start. But it only does it a couple of days a week. It's not the fuel shutoff switch either. I called a couple places and they thought it was the distributor module. I talked to some others who thought it might be the timing. What do you think? Does my truck have a timing chain or a timing belt?

It may be the ignition coil or even the fuel that is overheating. This is best diagnosed in first person. Whoever checks it will need to see it while it isn't starting. Checking things like proper power and ground is critical.

Your truck is equipped with a timing chain, not a belt. If it is need of service, you would be advised to replace the chain guides as well.