2001-2002 Subaru Forester Strut Failure: Clunks, Leaks, and Replacement Guide

Symptoms of a Failing Strut

A worn-out strut can make your Forester uncomfortable and unsafe to drive. Look for these common signs to know when it's time for a replacement.

Noises and Vibrations

• Clunking or Knocking: A hollow clunking or knocking sound when driving over bumps or uneven roads is a classic sign of a bad strut. This noise comes from metal-to-metal contact inside the worn-out strut or from a failed strut mount.
• Creaking or Squeaking When Turning: If you hear a squeaking or creaking noise when turning the steering wheel, especially at low speeds, it often points to a failing strut mount bearing.
• Steering Wheel Vibration: Excessive vibration felt through the steering wheel, especially after hitting a bump, can indicate that the struts are no longer able to properly dampen road imperfections.

Visual Signs

• Fluid Leaks: Struts are filled with hydraulic fluid. If you see oily, wet, or grimy residue on the body of the strut, it means the seals have failed and the fluid has leaked out. A leaking strut cannot function correctly and must be replaced.
• Physical Damage: Check the strut body for dents or damage. A bent strut rod or a dented housing can impede its function.
• Uneven Tire Wear: Worn struts can cause tires to develop a "cupped" wear pattern, with high and low spots across the tread. This happens because the tire bounces uncontrollably on the road surface. A bad strut mount can also affect alignment and cause wear on the inside or outside edges of the tire.

Handling and Performance Issues

• Excessive Bouncing: After hitting a bump, the vehicle should settle quickly. If it continues to bounce, the struts are worn out and not controlling the spring's oscillations.
• Nose-Diving and Squatting: When you brake hard, a worn front strut will cause the front end of the car to "dive" forward. Similarly, worn rear struts can cause the rear of the car to "squat" during acceleration.
• Swaying or Leaning in Turns: A feeling of instability, excessive body roll, or swaying when cornering indicates the struts are not providing adequate support.

Buying a Used 2001-2002 Forester Strut: What to Look For

Buying a used OEM strut can be a cost-effective option, but careful inspection is crucial. A high-quality used OEM part is often superior to a cheap, new aftermarket part.

Physical Inspection Checklist

• Check for Leaks: This is the most important check. The strut body should be dry. Any sign of oil residue means the strut has failed or is failing.
• Inspect the Shaft: The polished metal rod (shaft) extending from the strut should be smooth, straight, and free of rust, pitting, or damage. Damage to the shaft will quickly destroy the new seal.
• Perform a Rebound Test: If the strut is off the vehicle, try to compress it by hand (this may be difficult). It should compress smoothly and, more importantly, rebound on its own. If it stays compressed or rebounds very slowly, it is worn out.
• Examine the Mounts: Inspect the rubber in the top strut mount for cracks, separation, or deterioration. Check that the bearing (on front struts) turns smoothly without binding.
• Check the Spring: Look for heavy rust, cracks in the paint, or breaks in the coil spring itself.
• Verify Compatibility: Struts for the first-generation Forester (model code SF) generally fit from 1998-2002. However, always confirm the part came from a 2001-2002 model to be certain. Front struts are side-specific (left and right), so ensure you are buying the correct one.

Mileage and Red Flags

Struts typically have a lifespan of 50,000 to 100,000 miles. When buying used, aim for a strut from a vehicle with the lowest possible mileage. Avoid struts from vehicles that have been in a collision, as unseen damage is possible. Be wary of freshly painted struts, as this can hide rust or leaks.

Known Issues, TSBs, and Recalls

While there are no specific recalls for the struts on 2001-2002 Foresters, owners should be aware of related issues.

• Rear Suspension Corrosion: Some 2000-2003 Subaru models sold in "salt-belt" states were recalled for potential corrosion of rear suspension components. While not directly the strut, this highlights the importance of inspecting the entire rear suspension and subframe for rust, especially on vehicles from these regions.
• Front Strut Mount Rust: Later model Subarus have a TSB for rust accumulating in the front strut mounts due to a poorly designed dust cap. While not specific to the 2001-2002 model, it's a good practice to check this area for rust and ensure the dust caps are intact.

Cost of Replacing Subaru Forester Struts

Prices can vary based on brand, location, and whether you do the work yourself. Labor for replacing a pair of struts typically costs between $140 and $350.

Related Parts to Inspect and Replace

When replacing struts, it's a good time to inspect other related components that often wear out at the same time.

• Strut Mounts: The rubber mount at the top of the strut assembly can crack and degrade, causing noise and alignment issues. If not buying a complete assembly, replacing the mounts is highly recommended.
• Sway Bar End Links & Bushings: Worn sway bar links or bushings are a very common source of clunking noises on Subarus. They are inexpensive and relatively easy to replace.
• Ball Joints and Control Arm Bushings: Check for play in the ball joints and look for cracks in the control arm bushings. These can also cause clunking noises and handling problems.

Installation Tips and Torque Specs

Replacing a strut can be a DIY job if you have the right tools, but it can be dangerous. Using a complete "quick strut" assembly that includes the spring and mount is strongly recommended to avoid the need for a spring compressor.

• Alignment: You will need a professional wheel alignment after replacing the front struts, as the top strut-to-knuckle bolt is used to adjust camber. Mark the position of the alignment bolt before removal to get it close for the drive to the alignment shop.
• Brake and ABS Lines: Be careful not to stretch or damage the brake hose or ABS sensor wire when removing and installing the strut.
• Torque Specs: Using correct torque values is critical for safety. While specs can vary slightly, typical values for the first-generation Forester are:
  • Front Upper Strut Mount Nuts (to body): 14.5 ft-lbs
  • Front Lower Strut-to-Knuckle Nuts: 129 ft-lbs
  • Rear Upper Strut Mount Nuts (to body): 14.5 ft-lbs
  • Rear Lower Strut Mount Bolt: 162 ft-lbs

Frequently Asked Questions (FAQ)