* Low Power Steering Fluid: This is the most common and easiest to fix. Check your power steering fluid level. If it's low, add the correct type of fluid (check your owner's manual). A low level can cause whining due to insufficient lubrication.
* Worn Power Steering Pump: The pump is responsible for pressurizing the fluid. A worn-out pump will struggle to maintain pressure, leading to whining, especially under load (like when turning). This is a more significant repair.
* Worn Power Steering Rack and Pinion: This part converts the rotational motion of the steering wheel into linear motion for the wheels. Wear and tear, especially on the seals or bearings within the rack, can cause whining. This is a major repair.
* Leaking Power Steering Hose or Fitting: A leak reduces the fluid pressure, causing similar symptoms to low fluid. Inspect your hoses and fittings for any signs of leakage.
* Worn Power Steering Belt: While less likely to cause a *whining* sound specifically when turning, a worn or slipping belt can cause noises from the power steering pump, especially under load.
Troubleshooting Steps:
1. Check the power steering fluid level: This is the first and easiest thing to do. Top it off if needed and see if the noise improves.
2. Listen carefully: Try to pinpoint where the noise is coming from. Is it definitely from the steering system? Knowing the location will help diagnose the problem.
3. Inspect the power steering system: Look for any leaks around the pump, hoses, and rack and pinion.
4. Turn the wheel slowly and quickly: Does the whining change in intensity or pitch with the speed of turning? This can provide clues to the source of the problem.
Important Note: If you're not comfortable working on your car's power steering system yourself, take it to a qualified mechanic for diagnosis and repair. Driving with a faulty power steering system can be dangerous. Ignoring the problem could lead to complete power steering failure.
