Q: Whining sound accelerating and turning

asked by on June 01, 2017

when i have the car on stopped and I accelerate the vehicle starts making a whine noise also when I turn. the power steering fluid is ok but I feel like i need to add more. When I turn offf my car I look at my power steering fluid and it looks like it foams up.

My car has 128000 miles.
My car has an automatic transmission.

This may be related to a failing power steering pump or low power steering fluid levels. As you may know, the power steering system uses a pump, normally driven by a belt. The pump supplies pressure as it is turned by your engine, and driver control is supplied by either the rack and pinion or a steering gear box. Fluid pressure from the pump is used to push against a piston. When the wheel is turned, pressure flows to one side and this piston moves. The piston is attached to the steering gears. As the hydraulic pressure does the work, the driver controls the direction by turning the steering wheel. The operation of this is accomplished with a very sensitive valve system called a rack and pinion. When the pump is beginning to fail or is low on fluid, you may hear this type of whining sound. I would recommend having a professional from YourMechanic come to your location to diagnose and inspect your power steering system.

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