Originally Posted by HOOTIEtheMAN
What's the difference between reg fan
And electric fan?????
The factory engine fan is belt driven by the same serpentine belt that drives the fan, water pump, alternator, power steering pump, and a/c compressor. The factory fan is very efficient and it pulls a lot
of air through the radiator.
The aftermarket fan the previous owner installed into your TJ runs from an electric 12 volt motor powered by the electrical system. Its main benefit is it can be shut off by an electric switch for deep water crossings so the fan doesn't act like a propeller and pull itself into the radiator and damage the radiator.