(Updated on November 27, 2019)
The coil spring suspension exists in the suspension system of your vehicle. A better name for a coil spring is a compression spring because they are meant to help absorb the shock inflicted upon the vehicle.
Basically, a coil spring suspension will absorb the bumpiness and shakiness as you’re driving on the road. That way, your driving experience can feel a lot smoother and more comfortable because you won’t be bouncing up and down like you would if you didn’t have coil springs.
Your vehicle’s coil springs are under tremendous pressure because they holds all your vehicle’s weight. Meanwhile, they allow the wheels to stay vertically on the road after they drive over an object or obstacle.
The upper part of the coil spring is positioned below the spring perch while the bottom part of the spring is positioned on the lower control arm. As you may know, the lower control arm assists in keeping the wheels securely held in place.
Since the spring is above the lower control arm, it absorbs all the shock from down below. That way, the people inside the cabin above the coil spring can remain comfortable as they drive over obstacles on the road.
Top 5 Bad Coil Spring Symptoms
If you have a bad coil spring in your car, there are definitely going to be some noticeable symptoms that you will experience. Once you recognize them for what they are, you should do something about them immediately.
Below are five of the most common signs you have a faulty coil spring.
1) Sagging Corner
If you have a bad coil spring, that corner of the vehicle might sag more or appear lower than the other corners. This will easily be noticeable simply by looking at it from the outside.
But when you are driving the vehicle, you will have less stability from this sagging too. This problem will cause other symptoms to get worse, such as excessive tire wear and tear.
Coil springs are supposed to keep the vehicle from shaking and bouncing up and down as it goes down the road. But if you have bad coil springs in your vehicle, then they won’t be able to prevent this bounciness.
This means that you will experience a lot of bouncing and shaking as you drive, especially if you travel over rough terrain or roads with many potholes.
See Also: 10 Best Shock Absorber Brands
3) Uneven Wear on Tires
Coil springs are supposed to keep the wheels and tires balanced on the road. This allows the tires to receive an equal amount of wear and tear as they’re moving on the road.
However, if you have bad coil springs, then your tires will not be even on the road. Once that happens, the tire treads will wear prematurely and unevenly causing driveability issues on the road. You will also need to replace tires much quicker than normal even if tire rotation is done.
In addition to the shaking that you will experience from bad coil springs, there will be an annoying rattling noise coming from the suspension system too. This rattling noise will increase in volume as you accelerate the vehicle more and drive over rough roads.
Do not just ignore this rattling noise because it is an early warning sign that you need to get your coil spring replaced.
5) Warning Light
Most newer vehicles have warning lights for the traction control system of the vehicle. There are sensors built into the suspension which keep track of the vehicle’s stability.
Whenever the sensors detect any unusual behavior, it will cause the warning light to illuminate on the dashboard. Take this as a warning sign that there’s a problem with your suspension, possibly your coil springs.
You might not realize the exact problem at the time, but you will know soon enough if you experience the other symptoms too.