A properly functioning power steering pump is essential for your vehicle’s power steering system. This system makes steering easier, especially at low speeds, such as when parking or taking sharp turns. If the power steering pump isn't working correctly, it can reduce driving comfort and even compromise safety. In this blog, we explain how to recognize a faulty power steering pump and what you can do if you suspect problems.
What Is a Power Steering Pump?
The power steering pump plays a central role in your car’s hydraulic power steering system. This system operates by pumping hydraulic fluid under pressure through lines to the power steering cylinders, significantly reducing the effort needed to turn the steering wheel. In vehicles with a faulty pump, the lack of required fluid pressure can make steering heavy, especially at low speeds. When the pump doesn't function properly, it affects the performance of the power steering system, making it harder to steer and compromising safety.
There are roughly two types of power steering pumps: mechanical and electric. Mechanical power steering pumps are driven by a belt connected to the engine. They are robust and reliable, but they continuously draw engine power—even when no steering input is needed. Newer vehicles increasingly use electric power steering pumps. These operate independently of the engine and only activate when needed, making them more efficient and often quieter in operation.
Symptoms of a Faulty Power Steering Pump
There are several signs that may indicate a faulty power steering pump or a problem in the hydraulic system. Here are the most common symptoms:
Heavy Steering One of the first signs of a failing power steering pump is that the steering feels heavy, especially at low speeds or while parking. The pump may not be providing enough hydraulic pressure for the power steering system, making it harder to turn the steering wheel. This makes driving in busy city traffic or parking much more difficult.
Inconsistent power steering If you notice that the steering wheel sometimes turns smoothly but at other times feels heavy or too light, this may point to a problem with the power steering pump. This could be caused by air in the system or by a damaged pump that can’t deliver consistent pressure. Irregular power steering assistance can result in unpredictable steering behavior, which can be dangerous—especially at higher speeds.
Noises Strange sounds such as rattling, whining, or squealing can indicate a problem with the power steering pump. These noises often occur when there is air in the hydraulic system or when the pump is damaged. A low fluid level can also cause these sounds, as the pump isn't getting enough fluid to operate the system properly.
Low Fluid Level A rapidly dropping level of power steering fluid is often a clear sign of a problem with the pump or the hydraulic system. If the fluid level is too low, the pump can't build up sufficient pressure, leading to heavy steering and inconsistent performance. That's why it's important to regularly check the fluid level and top it off in time.
Fluid Leaks Oily spots under the car may indicate a power steering fluid leak. This fluid is usually pink or red in color and collects under the vehicle if there is a leak in the pump, hoses, or other components of the system. Leaks should be repaired quickly, as a continuous loss of fluid can seriously damage the pump and lead to total system failure.
Steering Wheel Vibrations Vibrations or unwanted shaking in the steering wheel can also point to a faulty power steering pump. This often happens when the pump doesn’t provide enough pressure, resulting in irregular steering performance. Such vibrations can reduce driving comfort and, in extreme cases, even lead to loss of control over the vehicle.
What to Do When Your Power Steering Pump Is Faulty
If you recognize one or more of the symptoms listed above, it’s important to take immediate action. Ignoring a faulty power steering pump can lead to further damage to the power steering system power steering system and reduce your control over the vehicle—with all the safety risks that entails. Have your vehicle inspected as soon as possible by a garage or specialist. They have the expertise and diagnostic equipment needed to identify the cause quickly and accurately.
We can refurbish your power steering pump, restoring it to top condition. In some cases, we can also supply a new pump—ranging from modern electric types to classic mechanical pumps. This way, we always offer a suitable solution, regardless of your vehicle’s type or year of manufacture.
Safety Warning
It is crucial never to continue driving with a potentially faulty power steering pump. A malfunctioning power steering system can severely impair your ability to steer accurately, which is especially dangerous at higher speeds or in emergency situations. Always consult a specialist, such as Auto Elect, for a thorough diagnosis and the appropriate measures to resolve the issue.
