If it were me, I'd simply run water through the three systems to make sure they're clear, If I had flow at this point I would then fill it with water and Gunk Super Cooling System Flush. Run it for the recomended half hour, drain and flush. Then put in a new thermostat in the right direction. If the guage still registers hot, then I'd replace the sender and gauge. If you do all that correctly, it has to work, period.
That's all there is to the cooling system, no more complicated than that.
Now if every thing is not stock and you have hot rodded the truck, i.e. different engine, radiator, fan, changed the air flow path, etc., then it's anyones guess as to where the problem is.
Where did you find the flex blade Dave?
Denny Graham
Sandwich, IL
