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Black Dog Customs has a hydraulic fan delete kit. It removes the fan, the hydraulic clutch, the Cadillac valve , the time delay module and the temp. sending unit. It will keep your truck at right at 200 degrees. One kit is $475.00 and you have to machine about 1/4" off of your serpentine pulley...

I suddenly started having the opposite issue. My fan freewheels all the time. Even when the engine isn't running. With the truck off, I can spin the fan and it will rotate for 5 or 6 turns before coasting to a stop. I understand there is a powerful spring inside the housing that keeps the fan...