A Guide to the 1993-2001 Subaru Impreza Power Steering Pump
Is that whining noise your power steering pump? Here’s how to know for sure and choose the right replacement.
- Before replacing the pump, always check the inexpensive suction hose o-ring first, as it's a very common cause of power steering whine.
- A used OEM pump from a salvage yard is often a more reliable and affordable choice than a remanufactured aftermarket pump.
- Properly flushing old fluid and bleeding all air from the system after installation is critical to the lifespan of the new pump.
- Your Impreza uses Automatic Transmission Fluid (ATF), not conventional power steering fluid.
Is Your Impreza's Power Steering Pump Failing?
A noisy or failing power steering pump is a common issue on older Subarus like the 1993-2001 Impreza. The most frequent complaint is a loud whining or groaning sound that gets louder when you turn the wheel and changes pitch with engine speed. You might also feel that the steering is heavy or stiff, especially when parking. While the pump itself can fail, the noise is often caused by something much simpler.
Check This First: The $2 O-Ring
🎬 Watch: How to fix the common Subaru whine for $5Before you spend hundreds on a new pump, check the small o-ring on the power steering pump's suction inlet. Over time, this o-ring gets hard and brittle, allowing air to be sucked into the system. This air in the fluid is what causes the classic Subaru power steering whine. Replacing this o-ring and the suction hose, which can also become hard, often solves the problem for a fraction of the cost of a new pump.
Common Failure Symptoms
- Whining or Groaning Noises: A high-pitched whine or low groan that changes with engine RPM is the most common sign. It's usually loudest when turning the steering wheel.
- Stiff Steering: The steering wheel becomes difficult to turn, especially at low speeds or when parking. In some cases, the power assist may cut out intermittently.
- Fluid Leaks: You may see puddles of red or light brown fluid under the front of your car. The pump itself can leak from its main seal, but be sure to check the hoses and their connections as well.
- Visible Air Bubbles: If you check the power steering fluid reservoir while the engine is running, you may see bubbles or foam, indicating air is getting into the system.
Choosing the Right Aftermarket Pump
If you've ruled out leaks, bad hoses, and the infamous o-ring, it may be time for a new pump. For a vehicle of this age, you have several options, and a new dealer part isn't always the best choice for your wallet.
OEM vs. Aftermarket Quality
Original Subaru power steering pumps are known to be very durable, often lasting over 200,000 miles. Because of this, a good, used OEM pump from a reputable salvage yard can be a reliable and cost-effective option. New aftermarket pumps are also available from brands like Atlantic Automotive Enterprise, BBB Industries, and PWR. Remanufactured pumps, most commonly from Cardone, are another popular choice. However, owner experiences with remanufactured pumps are mixed; some fail prematurely or are noisy out of the box. Often, these issues are blamed on improper installation, like failing to flush the old, contaminated fluid out of the system before installing the new pump.
Pro Tip: When replacing the pump, it's highly recommended to also replace the power steering fluid and any old, brittle hoses. Always bleed the system properly after installation to remove all air.
| Part Type | Estimated Cost |
|---|---|
| New OEM | $500 - $900 |
| New Aftermarket | $133 - $341 |
| Remanufactured | $150 - $400 |
| Used OEM | $50 - $150 |
| Shop Labor | $100 - $150 |
Frequently Asked Questions (FAQ)
What kind of power steering fluid should I use in my 1993-2001 Impreza?
Your Impreza uses Automatic Transmission Fluid (ATF) for its power steering system, not a dedicated power steering fluid. Look for a fluid that meets Dexron specifications. The fluid should be red in color. Using the wrong type of fluid can damage the seals and the pump.
Can I replace the power steering pump myself? 🎬 See this step-by-step guide for replacing the pump yourself
Yes, this is a DIY-feasible job for someone with mechanical experience. It involves removing the drive belt, disconnecting fluid lines (which can be messy), and accessing bolts that may be tight or hard to reach. The most critical part of the job is properly bleeding the system of air 🎬 Watch: A helpful guide on how to bleed the system after the new pump is installed. Failure to do so will cause the new pump to be noisy and can lead to premature failure.
Do I need to replace the power steering hoses at the same time?
It is highly recommended. The rubber hoses can become hard, brittle, and cracked over time. A failing hose can leak fluid or allow air into the system, mimicking the symptoms of a bad pump. Replacing them with the pump ensures the entire system is reliable.
Are there any recalls for the power steering pump on my Impreza?
No, there are no specific NHTSA recalls for the hydraulic power steering pump on the 1993-2001 Subaru Impreza. A forum user mentioned a potential recall on early models for a filter inside the reservoir, but official documentation is scarce. Any recalls you may find online are likely for newer models with electronic power steering.
Helpful Videos
Technical Specifications
OEM Part Numbers: 34411AC061 34430FE000
Belt-driven hydraulic vane pump. Uses Automatic Transmission Fluid (ATF) as hydraulic fluid.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
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