Master Cylinder pliers,,,,, the cir-clip pliers? the innies and outies? with the pins?
How about the temp switch in the radiator...... two or three contacts? I remember seeing it but I think its only a two contact device. (as installed on this vehicle) Remember, bob's radiator shop was trying to get out of a deal gone bad with this seller....... When I saw the fans turn they were painfully slow which led me to suspect that "bob" might have monkey wired the fans and I was thinking that he almost might have wired them in series (6 volts each) by their slow speed ..... I am aware that there might be a two speed circuitry... (you confirmed that)
I still should get the heat to the radiator 1st. I will pull the thermo to verify circulation (if the bleeding doesnt cure it) then I can observe the cooling fan operation and go from there.
My Carbon Dioxide test at the tank was flawed. I should have purged the stale air from the tank first by filling it to overflow, then lowered the coolant level to create an air pocket for the CO2 to form in.... thus getting an accurate test (Snap-on overheat diagnostic tool).
Wish me luck! (or tell me that I'm silly)
Kurt