I replaced the radiator in Dec 06. In Jan. it ran hot,let it cool down and replaced the thermostat and it ran good for 2 weeks and ran hot again,replaced with another thermostat and it ran good for 2 weeks and ran hot again. Replaced the water pump and install everything back together and put in water and antifreeze and let it run for awhile to get the air out and the took it out on the road for a test run and it ran cool. Got up this morning and let it warm up,got going to work and it ran hot again. HELP

 

How bout the clutch fan? You've done everything else

 

Never had the opportunity to have to mess with one. What is the proper way to troublle shoot the clutch fan and how it really works