I have a mitsubishi galant 2002 it overheated and

What are the trouble codes in the engine computer ?

Check the Fuel pump

2003 Mitsubishi Galant Repair and Maintenance - RepairPal

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Information on the 2003 Mitsubishi Galant, including known problems, recalls, user ...2002 Mitsubishi Galant ... it will crank but not start not getting any spark or fuel what can you suggest. would like . ... The fuel return line fitting at the fuel pump may be restricted, causing excessive fuel pressure in the fuel injection system.

I'm not sure what you're saying at the end of your question, but it seems like you should have it towed to a shop and ask for your list of what is now damaged in your car. you might need a new motor and or countless other things either way you look at it, its not going to be cheap. Sorry about your car.

That sounds like castrophic internal damage...

Those wires are shorting out somewhere, causing your battery to die. I would replace the wires to the push-button, as this is probably aftermarket anyway, right?

As with any no start issue, you will need to figure out if you are dealing with a no spark or no fuel pressure problem to proceed.
I would check those things the next time it will not start.
Could be a relay, coil, sensor, or other component.

Change idle control sensor.

try cleaning the throttle and change air filter

i work for advanced auto
the altiniator can bee goood but the voltige regulator is bad

Has it overheated lately?
My wife overheated our Galant and it just stopped working, it cranks but that's it.
I pulled the sparkplugs and found them wrapped in a gewey jelly like substance. Like an oil/antifreeze combo.
I am going to replace the entire motor for $1000 as taking it to the mechanics to theorize and practice may cost more.