The Nissan Altima Radiator fan pulls outside air through the front-mounted radiator to cool down the engine when road speed isn't enough to do it alone. The Radiator fan is located just behind the grille and next to the radiator core. It draws air across metal fins which strip excess heat from circulating coolant before that fluid reenters the engine. Early versions could be mechanical, spinning from belts tied to engine speed. But every modern Altima is now all-electric. Its Radiator fan uses a compact motor, fan blade, and molded shroud to provide a steady stream of air at idle and stoplights. The Radiator fan switches on automatically when the sensors detect an increasing coolant temperature, which is a good safety feature for an Altima that is waiting in traffic. The Radiator fan also relieves the load on other units of a Nissan cooling network, and when it fails, there's a quick rise in temperatures. Each assembly makes a single bolt-in unit that aligns the motor, blade, and shroud for maximum efficiency. Moreover, their placement facilitates quick heat transfer that prevents damage to components. It also helps maintain fuel economy. Chiefly importantly, it avoids expensive overheating for Nissan owners during daily commutes or long trips.
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