2011-2012 Acura RL Front Strut: Diagnosing Clunks, Leaks, and Replacement Options

Symptoms of a Failing Front Strut

A worn or failed strut can significantly degrade the ride, handling, and safety of your Acura RL. Symptoms are often subtle at first but become more pronounced over time. Listen and feel for these key warning signs.

Clunking or Knocking Noises

The most common symptom is a clunking or knocking sound from the front of the car, especially when driving over bumps, potholes, or uneven pavement. This sound is caused by excessive movement in the suspension due to the worn internal components of the shock absorber, which can no longer effectively dampen impacts. The noise can also be caused by worn strut mounting components.

Bouncy or Floating Ride

If your RL feels unusually bouncy and continues to oscillate up and down after hitting a bump, the shock absorbers inside the struts have likely failed. A good strut should absorb the impact and settle the vehicle almost immediately. A worn strut loses this damping ability, resulting in a floaty, uncontrolled feeling, particularly at highway speeds.

Nose-Diving and Increased Stopping Distance

When you apply the brakes firmly, a healthy suspension limits how much the front of the car dips forward. If you notice excessive "nose-diving," it's a strong indicator of weak front struts. This instability can also lead to longer stopping distances, compromising safety in emergency situations.

Visible Fluid Leaks

Perform a visual inspection of the front struts. The main body of the strut should be dry. If you see oily, hydraulic fluid leaking down the side of the strut body, it means the internal seals have failed and the strut must be replaced. A coating of oily dirt and grime is a tell-tale sign of a leak.

Uneven Tire Wear

Worn struts can cause a specific type of uneven tire wear called "cupping" or "scalloping." This appears as a series of dips or hollows in the tire tread. The bouncing of the tire on the road surface from the lack of damping causes this wear pattern. If you see this, the struts are almost certainly in need of replacement.

Buying a Used 2011-2012 Acura RL Strut

For many owners, a low-mileage used OEM strut is the best value, offering factory-tuned performance for significantly less than a new part. However, since struts are a wear item, careful inspection is key.

What to Inspect on a Used Strut

• Check for Leaks: The most important check. The strut body must be dry. Any sign of oily residue means the strut is bad or will fail soon.
• Inspect the Rod: The chrome-plated piston rod extending from the top should be smooth, straight, and free of rust, pitting, or damage. Any imperfections will quickly destroy the new seal.
• Examine the Spring: Check the coil spring for heavy rust, cracks, or breaks. Ensure the protective coating on the spring is mostly intact.
• Check the Mount: Inspect the upper strut mount for cracked or deteriorating rubber. This part is often replaced during a strut job anyway, but a good used mount is a bonus.
• Ask for Mileage: Always buy from a reputable seller who can provide the mileage of the donor vehicle. A strut from a car with 50,000 miles is a great find; one from a car with 150,000 miles is near the end of its service life. Struts typically last between 80,000 and 120,000 miles.

Why Used OEM is Often Better Than New Aftermarket

The Acura RL's suspension was precisely tuned by Honda engineers for a specific balance of comfort and handling. A used OEM strut retains this original valving. In contrast, many cheap, new aftermarket strut assemblies use generic, one-size-fits-all valving that can make the car feel floaty, harsh, or simply not handle as it should. A quality aftermarket brand like KYB (who is an OEM supplier) is a good alternative, but a low-mileage used OEM part often provides the best ride quality for the price.

Known Issues, TSBs, and Recalls

For the 2011-2012 model years, there are no specific recalls or widespread Technical Service Bulletins (TSBs) from Acura related to the front struts. Most official communications for this vehicle concern the Takata airbag recalls. However, forum discussions among owners confirm that clunking from the front suspension is a commonly discussed topic, often traced back to worn struts or related bushings.

Cost for a 2011-2012 Acura RL Strut Replacement

Costs can vary significantly based on the parts you choose. It is always recommended to replace struts in pairs (left and right) to ensure balanced handling and performance.

Replacement and Installation

Replacing the front struts on an Acura RL is an advanced DIY job due to the double-wishbone suspension design. It typically requires separating the upper control arm ball joint. If you are not using a complete strut assembly, you will also need a high-quality spring compressor, which can be very dangerous if used improperly.

Torque Specifications

Using a torque wrench is critical for safety and to prevent damage to the parts. These are the key torque specs for the job.

Related Parts to Consider Replacing

While the suspension is apart, it's a good time to inspect and potentially replace other related wear items:

• Strut Mount: The rubber mount at the top of the strut that absorbs vibrations.
• Bellows (Dust Boot) and Bump Stop: The rubber boot protects the strut's piston rod from dirt, and the bump stop prevents harsh bottoming out. These are often sold as a kit.
• Sway Bar End Links: These connect the sway bar to the strut or control arm and often wear out, causing clunking noises.

Part Number Reference

Frequently Asked Questions (FAQ)