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HomeGuideWhat Is the Cause of Rear Suspension Creaking Noise? Detailed Guide

What Is the Cause of Rear Suspension Creaking Noise? Detailed Guide

You must fix the strange rear suspension creaking noise immediately! Your car’s mechanical system keeps a safe distance from the road surface. Drivers will never lose control of their driving performance, especially in harsh weather conditions. 

A creaking noise can be caused by problems with ball joints, shocks, suspension bushes, and lubrication shortages. Grease is the most common and simplest cause.

Rear Suspension Creaking Noise
Rear Suspension Creaking Noise

The shocks aren’t lubricated

There is often a severe lubrication shortage between different metal components – like shock units and rod ends – that causes steering and suspension system failure. The suspension will be destroyed by significant dirt buildup if not lubricated. 

A little grease would solve this problem. What if the squeak persists? You’re probably dealing with more severe issues. Besides lubrication, shocks are also important. They absorb road impact, preventing your car from bouncing.

You will experience incessant bounces and suspension creaking noises once they start leaking.

Joints that are worn or faulty

Whenever you go around a corner, do you hear creaking or squeaking rear suspension? Ball joints might be worn or defective. Joints connect your suspension to the wheels, allowing them to move freely. 

The socket and bearing stud fit snugly into a lubricated and sealed housing. Different suspension configurations may have different structures, but each wheel is supposed to have both lower and upper ball joints. 

Ball joints normally last several years. When the seals are torn, they become much less effective, or break by natural wear and tear. Dirt will filter into your system, causing it to lose lubrication. 

There are many signs that the ball joints are damaged. Over bumps, drivers might hear knocking sounds in addition to creaky cornering. Your handling can even be affected by worn joints. Your car drifts to one side or steers loosely? 

It’s a telltale sign of bad ball joints! Ball joint problems are also indicated by uneven tire wear. It’s time to get your eyes inspected if you notice these symptoms. Your wheels might come loose one day if the ball joints are completely broken.

Suspension bush damage

On any car’s suspension system joint, bushings are rubber cushions. Noise and vibration are reduced by reducing unnecessary movement. Many of the standard bushes are found on shock absorbers, ball joints, and anti-roll bars. 

As rubber bushes often undergo dramatic strain, it’s understandable that they wear out over time. In fact, replacing a suspension bush is one of the most popular advices. When you roll over bumps, worn bushes create clunks and rattling noises.

You may even hear a deafening screech as the bush dies. Pointers of damaged bushes are easy to detect. Visual inspection allows even novices to identify them.

It is important to know how to troubleshoot a creaking rear suspension system

It’s easy to recognize the symptoms above at first glance, but it’s not enough. You must troubleshoot your car thoroughly to give it proper care! 

1.Take a test drive 

Test driving your car is the first step towards proper diagnosis. For that process, you need an empty, smooth road, a parking lot, and a second person to listen.

Step 1. All car windows should be rolled down. Put down rear seats that can fold.

Step 2. Start the test drive on a flat, smooth section of the road/parking lot.

Check whether the noise begins at high or low speed, and whether it is accompanied by vibrations or thunks. After some time, do they go away or do they get worse? Do you hear thumping, squealing, or something else?

Step 3. Drive around in huge circles (preferably at 15-20 MPH). Check if the noise worsens or dies down as your car leans.

Turn the vehicle around and listen again. Identify the conditions under which the noise occurred by reproducing it.

2. Listen to your wheel, wheel bearing, or tire noise

Vibrations at low speeds can cause suspension creaking noises that worsen with speed. In operation, wheel bearings usually don’t make much noise. Yes, they might squeal, growl, or grumble, but not excessively.

As soon as the squeaking in rear suspension becomes apparent, your bearing will become increasingly loud. As well, the weight of your vehicle might lean on that bearing, so loud noises from the right could indicate problems on the left (the reverse is also valid).

Clicking noises are not limited to wheel bearings. Also consider failed brake shoes and rear drums. Make sure you check them all!

3. When turning or going on bumps, listen for noises

If your suspension system slides suddenly – due to road bumps or shifting weights while cornering – creaky suspension issues will arise. Ball joints are clearly malfunctioning – as we discussed earlier. 

The linkages and control arms that connect the rear suspension will also be problematic. End-link sway bars and strut mouths can also cause problems. The deeper the thunk or thud, the more serious the problem.

Swaying bars might cause light rapping noises, but broken strut mounts, control arms, or rubber bushings can cause heavy thumps and loud clicking noises. A blown shock is more likely to occur when the car is thumped over speed bumps and potholes, as well as rolling excessively while turning. Your suspension components are bottoming out.

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