Replacing a strut mount is a manageable DIY car repair for those with basic mechanical skills and the right tools. This guide will walk you through the process, ensuring you can safely and effectively swap out your old strut mounts for new ones.

How to Replace a Strut Mount: A Step-by-Step Guide

A strut mount is a crucial component of your vehicle’s suspension system. It connects the strut to the car’s body and houses the bearing that allows the strut to pivot when you turn the steering wheel. Over time, these mounts can wear out, leading to issues like clunking noises, poor handling, and uneven tire wear. Recognizing these symptoms is the first step toward a smoother, safer ride.

Why Replace Your Strut Mounts?

Worn strut mounts can significantly impact your car’s performance and safety. They absorb vibrations and shock, but when they degrade, these benefits diminish.

• Noise: A common sign is a clunking noise when turning or going over bumps.
• Handling: You might notice sloppy steering or a feeling that your car isn’t responding as it should.
• Tire Wear: Uneven tire wear can also indicate problems with suspension components like strut mounts.

Tools and Materials You’ll Need

Before you begin, gather all necessary tools and parts. Having everything ready will make the job much smoother.

• New Strut Mounts: Ensure you have the correct ones for your vehicle’s make, model, and year.
• Jack and Jack Stands: Essential for safely lifting and supporting your car.
• Lug Wrench: To remove the wheel.
• Socket Set and Wrenches: Various sizes will be needed.
• Strut Spring Compressor: Crucial for safety; never attempt to compress springs without one.
• Pry Bar: For leverage.
• Penetrating Oil: To loosen stubborn bolts.
• Torque Wrench: For tightening bolts to manufacturer specifications.
• Safety Glasses and Gloves: Always prioritize safety.

Step-by-Step Strut Mount Replacement Process

Replacing a strut mount involves disassembling part of the suspension. Take your time and follow each step carefully.

1. Prepare Your Vehicle

Park your car on a level surface. Engage the parking brake firmly. Loosen the lug nuts on the wheel you’ll be working on, but don’t remove them yet.

2. Lift and Support the Vehicle

Using your jack, lift the front of the vehicle until the wheel is off the ground. Place jack stands securely under the frame or designated support points. Lower the car onto the jack stands. Remove the wheel.

3. Access the Strut Assembly

You’ll need to disconnect the strut from the steering knuckle. This usually involves removing a few bolts and nuts. You may also need to disconnect the sway bar end link and any brake lines or ABS sensors attached to the strut. Use penetrating oil on any rusty bolts.

4. Compress the Coil Spring

This is the most critical and potentially dangerous step. The coil spring is under significant tension. Use a strut spring compressor to safely compress the spring. Follow the tool’s instructions precisely. Ensure the compressor is securely seated and evenly compressing both sides of the spring.

5. Remove the Strut Assembly

With the spring compressed, you can now access the top of the strut assembly. There will be several nuts holding the strut mount to the vehicle’s body. Do not remove the large center nut yet, as this holds the strut assembly together. Remove the nuts securing the strut mount. Carefully lower the entire strut assembly out of the wheel well.

6. Replace the Strut Mount

Once the strut assembly is out, you can remove the center nut. Slowly release the tension from the spring compressor. Remove the old strut mount. Install the new strut mount, ensuring it’s oriented correctly. Reinstall the spring compressor on the new strut and compress the spring again.

7. Reassemble the Strut Assembly

With the new mount in place and the spring compressed, reinstall the center nut. Tighten it to the manufacturer’s specifications. Carefully reverse the process of removing the strut assembly, placing it back into the wheel well. Reinstall the nuts that attach the strut mount to the body.

8. Reconnect Suspension Components

Reconnect any sway bar links, brake lines, or ABS sensors you disconnected. Reinstall the wheel and hand-tighten the lug nuts.

9. Lower the Vehicle and Torque

Lower the vehicle off the jack stands. Torque the lug nuts to the manufacturer’s specifications in a star pattern. Tighten all suspension bolts and nuts you removed to their proper torque values.

10. Test Drive

Take your vehicle for a short test drive in a safe area. Listen for any unusual noises and check how the steering feels. If everything feels right, you’ve successfully replaced your strut mounts!

Common Issues and Troubleshooting

Even with careful work, you might encounter minor issues. Knowing how to address them can save you time and frustration.

• Stubborn Bolts: If bolts are seized, use more penetrating oil and allow it to soak. Gentle tapping with a hammer can also help break them loose.
• Alignment: After replacing suspension components, it’s highly recommended to get a wheel alignment to ensure optimal tire wear and handling.
• Noise Persists: If the noise continues after replacement, double-check all connections or consider if another suspension component might be faulty.

When to Call a Professional

While strut mount replacement is a feasible DIY project, there are times when professional help is advisable.

• Lack of Tools: If you don’t have a strut spring compressor or a torque wrench, it’s safer to let a mechanic handle it.
• Uncertainty: If you feel uncomfortable at any stage of the process, don’t hesitate to seek professional assistance.
• Complex Suspension: Some modern vehicles have more complex suspension designs that can be challenging for beginners.

People Also Ask

What are the symptoms of a bad strut mount?

Symptoms of a bad strut mount often include clunking or popping noises when turning the steering wheel or driving over bumps. You might also experience a loose steering feel, increased vibration, or uneven tire wear.

How long does it take to replace a strut mount?

Replacing a strut mount typically takes 1 to 2 hours per side for a DIYer with basic experience and the right tools. For a professional mechanic, it can often be done in under an hour per side.

Can I drive with a bad strut mount?

You can drive with a bad strut mount, but it’s not recommended for long periods. It can lead to further suspension damage, affect your car’s handling and braking, and potentially compromise safety.

Does a strut mount affect alignment?

Yes