New clutch fan not working

[Alitis007]

I understand what your saying but how does my radiator end up being blocked overnite. it was working fine when i pulled it into the garage to add turbo. Drive it out with turbo and went straight on a 4 day trip and it got hot the whole time. Lucky the fan was running all the time that it kept cool enough to not overheat and spill it coolant. New fan wasnt coming on at all to even help cool it down after cresting a hill. Didnt drop below 105 degrees before the next incline came along.

How old is your coolant? When was the last time you had the radiator cleaned ? When was the last time the welsh plugs removed to clean all the scale from the block ? What condition is the water pump impeller ??

Your radiator may have been blocked back when you installed the turbo kit over 6 months ago and you didn't know. Understand how a viscous fan hub works, the air passing thru the radiator heats the element ( a coil of flat bar ) in the hub to create a larger surface area to utilize the viscosity of the oil in the hub to lock the fan close to a 1:1 ratio with the engine rpm, if the radiator is blocked the bottom half wont heat up enough to head to heat the element for it to engage.

Assuming your water pump is circulating the water and you don't have any water leaks thats what i think your fault is.

If you do end up getting a new radiator you still need to reverse flush the block and heater core to remove as much scale as you can to keep you warranty.