* Squealing or whining noise: A high-pitched squeal or whine, especially when turning the steering wheel, is a classic sign. This is often caused by the pump's belt slipping or internal components wearing out. The noise might be more pronounced when the engine is cold or at low speeds.
* Stiff steering: The most obvious sign. Steering becomes significantly harder, requiring more effort to turn the wheel, especially at low speeds or when the engine is idling. This is because the pump isn't providing enough hydraulic assistance.
* Steering wheel shimmy or vibration: While not always indicative of a failing pump, a shimmy or vibration in the steering wheel *can* be a symptom if combined with other issues like a squeal or stiff steering.
* Power steering fluid leak: Look under your car for leaks around the power steering pump itself, or along the lines leading to and from it. Low power steering fluid levels will also lead to stiff steering and pump damage. Check the fluid level regularly, and look for discoloration (dark brown or burnt smell) which signals contamination.
* Fluid overheating: Power steering fluid can overheat if the pump is failing. This can cause the fluid to become dark and burnt-smelling.
* Groaning or groaning noise: A low groaning sound can also indicate pump wear.
Important Considerations:
* Belt tension: A loose or worn serpentine belt can also cause squealing and stiff steering, mimicking power steering pump failure. Check your belt's tension before jumping to conclusions.
* Fluid level: Low fluid levels can severely damage the pump. Always check and maintain the correct fluid level.
If you experience any of these symptoms, it's crucial to have your vehicle inspected by a qualified mechanic as soon as possible. Driving with a failing power steering pump can lead to further damage and make your vehicle unsafe to operate.
