Over- Heating Problem

[ReaceRacer]

I have a 83' 4x4 pickup and I am having an overheating problem. I have changed the thermestat, fluid, radiator cap, and I don't know what to do next. The radiator is fine and I dont see any cracks in the fead. should I change the head gasket? Please send some Ideas for me to try.

[94toytruck]

well, my trucks been over heating as well. I was told maybe get the radiator cored* out ... pretty sure a shop would have to do this. Its just a thought, since flushing doenst always get everything out. Do let me know what you do, maybe itll help with my prob! Good luck

[Rycam]

How do you know your radiator is fine? A new one is relatively cheap (around $130 for a 3-ROW all brass unit @radiator.com). I had a clogged radiator but ended blowing a headgasket job trying to find out every possible problem with the cooling system until I tried a new radiator. These Japanese engines do not like a lot of heat, and long periods of elevated temps can be just as harmful as one big heat spike.

Another problem may be a bad fan-clutch if the truck overheats when run below 30mph or so. The fan is not needed above 30 mph, so if it overheats at freeway speeds the fan-clutch is not the problem.