My truck bad recently been ran hot and wouldn't

If it ran before then check your work, a wire may be off from somewhere.

Buy a new crank sensor from a Mitsubishi dealer. For that sensor always buy OEM parts. More expensive, but 100% reliable.

Any codes? Maybe another sensor has gone bad? MAF?

Have you checked to see if you have good compression in all 4 cylinders ?

Generally the cause of an electrical component to fail is high heat or extreme voltage load.
Is the coil pack and module getting too hot from the heat of the engine ?
Is it shorting out because of oil or wet surfaces ?
Could you be loosing voltage to the module from the key switch ?
Are you loosing ground signals from the computer ?

I don't think there is a heat shield on the starter but, I wouldn't think that would be you're problem. I would try changing the ignition module. It's on the engine block, drivers side, I think. Usually when they are going bad they will shut off engine when they get hot. It won't crank until it cools off. After it cools engine will crank and run good until it gets hot again. Good Luck.

Your alternator might be bad also, or the crank sensor

crank position sensor is known for going bad in those cars!!

O2 sensor won't cause a no spark no start condition but the crank sensor will. most time bad crank sensor will not set a code if engine doesn't start. usually set code on o drop while driving. I would check connection at sensor if good then replace sensor.

If the coolant is ok then the thermostat/sensor is probably bad.

check ignition module and ECM wiring.