greetings...
id fire it up and let it idle till the fan comes on... if the radiator cap blows id shut it off and jumper 12v to the under tank fan connector to see if it moves air...
or... i might do that in reverse order if i didnt wanna blow the radiator cap...
my fan comes on between 2 and 3 and shuts off between 1 and 2... lotts of variables like air lock and low coolant and whack sensor or relay... id jumper it 1st...
its only supposed to be one hundert degrees us there tomorrow... that not hawt...
j o