Skip the auto shop - Our mechanics make house calls

Q: Power steering system

asked by on

I'm having an issue when I turn my steering wheel sharp left or right and I get a high pitched whining from the wheel

My car has 146000 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. When the pump is low on fluid, it may produce this kind of high pitched whining sound you describe. I would recommend having an expert from YourMechanic come to your home to diagnose your power steering system.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Car vibrating & making alot of noise while driving. 1996 Toyota Corolla

Hi there - I think you have unrepaired damaged still. The vibration you feel through the steering wheel is an out-of-balance tire, bent wheel, or tire that is separating. It is also possible the vibration/noise is coming from the passenger-side...

Q: which temp sensor feed the computer, the one on the thermostat housing or the one going into the motor

The answer to your question is - both. The ECU factors in temperature readings from both thermostats to factor in the operating temperature of the engine. In most cases, when you have a fault like this, an OBD-II trouble code...

Q: Steering wheel has a lot of "play" or movement.

Hi there. The first thing you would need to do is perform a dry park steering test. Have someone get in the car and set the parking brake. Then have them start the engine and turn the steering wheel left...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.