I deleted the F150's fan many years ago. Never got around to installing an e-fan. 99% of the time it's just fine; on a hot summer day if I'm stuck at a long red light or doing something where I'm going too slow to move air through the radiator it will get hot. Then I open the windows and blast the heater. It's been so long I don't recall if I felt the freed-up power but it definitely made the engine quieter! It warms up to operating temp faster; mech fans are always spinning whether their clutches are engaged or not. Also couldn't make an fe claim but it has to help.
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