If the AC compressor drys up it will put a huge load on the engine, which can cause it to stall.

Not rechargeing the AC or not using the AC for long periods will cause the ac compressor to dry up...

solution would be a new AC compressor..

clean up those leaky fluids too, a stuck thermostat will cause over heating... hot air coming from fan and radiator is normal....

I also find that i had to replace radiator about every 120,000 miles... they just go bad after that long..

My 93 civic has 320,000 miles...
all miles made by me. replace radiator 3 times...

-al