New electric fan wiring preventing car from starting

20 hours ago, bravemushi260z said:

So I have the overheating problem with the car just idling for about 15-20 minutes, could be carbon deposits since I dont know how this car was running before I got it. 
 

Carbon deposits won’t cause engine overheating.

A cooling system that is not well maintained will. Radiator passages clogged with rust and mineral deposits will. A water pump with a corroded impeller will.

20 hours ago, bravemushi260z said:

 

I am looking into how to get this out, do you recommend fuel additives? I had originally run sea foam with my gas to clean everything up, but is there something people recommend for these cars?

I use Techroline, the additive that Chevron puts in their gasoline. It can be found in better auto parts stores. 

Warm the engine, then introduce it through the carburetor while working the throttle by hand (as it gets into the combustion chamber the engine will stumble and want to die, don’t let that happen). 
 

Just as the last of the Techroline is getting sucked into the engine, let it die, so the stuff can soak in. After a half hour or so, restart the engine, and blow the rest of the carbon out.

The only other way is to remove the head and clean everything up.

But.

It sounds like your engine is one with high miles. Cooling system issues, carbon buildup, these are indicators of an engine with a lot of miles on it.