The Nissan Altima Power Steering Pump uses the power of the engine to develop hydraulic pressure to help the steering gear assist the driver in turning the wheel easily at low speed and with less effort. The pump is mounted on the engine and is driven by the crankshaft through either a V-belt or a serpentine belt on Nissan Altima vehicles that spin an internal rotor. This creates the internal pressure on the fluid. The pressurized fluid moves through a high-pressure hose to the control valve. The control valve directs the flow of the pressurized fluid to either side of the steering cylinder piston when you turn the steering wheel. The low-pressure hose transports fluid back to the pump. The Power Steering Pump may contain its own reservoir or may be connected to a remote reservoir via hose. But the functioning idea is the same for all Nissan Altima. The output pressure of the Power Steering Pump must remain normal for normal handling. Whining noise, a leak, or increased effort to steer indicates something is wrong with the Power Steering Pump. The Power Steering Pump is essential to Nissan steering performance on every Altima.
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