This is one of those questions that can almost not be answered. It really all depends on your skill level if you plan to do it yourself. It can cost quite a bit either way, of course cheaper if you DO decide to do it yourself.
it is most likely not working due to a blown fuse
If you have coolant in the oil, it will cause the rod and main bearings to fail.
either inside the driver side kick panel or in engine bay fuse box
You have a blown head gasket or a cracked head. STOPdriving this car immediately until you have it repaired. You will destroy this engine if you continue to run it.
If the engine is not blown, I would remove the spark plugs, and turn the engine over until you get most of the water out. Suck out the remaining if you can. And change your engine oil.
Pull the fuse out and have a look at it and if the wire inside is broken then its blown
There are several things that can cause your 1992 Mitsubishi Eclipse to overheat. A malfunctioning water pump or a blown head gasket should be the next things that are checked.
Thermostat would be my first guess, If not is a fan blown, do a radiator flush?
The most common fault are that the fuse has blown or the thermostat is faulty.
Check your car for a bad or blown horn rlay.
If the front of the engine leaks coolant there is a blown head gasket. This requires immediate repair as it can lead to a blown engine if not managed appropriately.
Just like you would repair car engine was a blown head gasket. Take it apart and replaced the head gasket. Make sure and have the head checked for cracks and warpage.