Hello, I have a 1992 F-150 5.0l it has always had problems with overheating and I was just wondering what could be some reason for this. My heater core was cracked when I got the truck so I bypassed it, besides that everything else is stock. Any insight would be appreciated.

 

Thermostate thats stuck shut, low fluid, bad water pump.

 

Plugged radiator

 

Cracked cylinder head, blown head gasket.

 

Failed coolant temperature sensor or bad thermostat is the starting point. How does the coolant look?