My 1985 Ford Bronco will not stop overheating. I replaced radiator, hoses, thermostat, bought fan shroud, and put new coolant in it. I don't know if the temperature sending unit is bad or what but I cant understand how it could still be overheating. I was going to replace the temperature guage to a gauge that shows actual temps. I am only 16 and don't know alot of things about engines. Any advice would be helpful and I would appreciate it alot.