Discovering noises from your automobile frequently is never reassuring, so hearing noises on your Kia Optima suspensions when you pass a speed bump can be disturbing. This symptom may be a sign of a minor issue as well as a warning of a much larger repair to come. Whatever the case, it is essential to check the source and take the necessary actions to resolve the issue, it is with this intention in mind that we wanted to write this document to support you see more clearly. We will first see the possible causes for a crack when the speed bump passes, then, what can be the reason of a squeaking noise when a speed bump is being passed and finally what to do if you have another noise when a speed bump is passed.
Suspension cracking noise Kia Optima
Check Kia Optima suspension
If you encounter a suspension noise when you pass a speed bump on your Kia Optima, and it is categorized by a “clack” or cracking, it is highly plausible that your suspension block is the cause of it. In fact, it may be the suspension cups, which, when they are out of date, have the rubber (silentblock) that acts as a buffer and shock absorber for the upper part of the suspension that no longer fulfils its function during small bumps that compress the suspensions. To check if this is the issue that worries you, take a dented road and pay attention to the noise coming from your front axle as you pass over holes. If it is indeed the cups, think of replacing them quickly or you may damage other parts and have to make more important fixes.
Check the cardan shaft
If you are here because you have researched for “Kia Optima suspension noise” and the suspension is not the cause of your problem, it may be that the cardan shaft is responsible. In fact, when the cardan bellows get old and the dirt/dust accumulates inside them their action is degraded and it is possible to experience a noise when they are in torsion. To check this, you can try both types of torsion, first vertical with suspension compressions on the speed bump passages, and horizontal when you are going to make a turn at low speed. If it cracks in these two conditions you should consider changing it or them. If you have the feeling that this noise is more like a a loud noise on Kia Optima, don’t hesitate to consult this content.
Check steering hinges/stabilizer bar
Finally, when you find out a suspension noise when your Kia Optima passes over a speed bumps, it is imaginable that the hinges or the stabilizer bar are responsible. Simply like the gimbals, the steering part is mobilized when you vary direction. If this is your situation, the components that may have been destroyed by normal wear and tear or impacts (e. g. sidewalks). The steering hinges, the stabilizer bar hinges. can be the origins of your noises, to check it, put it under the vehicle and apply twists on each of its components to check that there is no particular play on one of them, they are expected to resist you quite strongly over their entire travel. Keep in mind to take your vehicle to your technician or change them if they are involved.
squeaky noise speed bump Kia Optima
Check the stabilizer bar
If, alternatively, you have a noise that is more like a squeak when you pass a speed bump with your Kia Optima, it is plausible that it is the stabilizer bar itself that is involved. In fact, abnormal/pronounced wear of the latter can cause irregular friction which can cause this squeaking noise. Please remember to check by passing under your vehicle the condition of the paint on your bar which will tell us if there is friction. Second plausible explanation, it may be your stabilizer bar silentblocks that are dried out and cause noise, in which case disassemble them from the cradle and grease them, this should resolve the issue.
Check engine silentblocks
Finally, last case that we can check together, it is the engine silentblocks, in fact, these silentblocks function as pads/shock absorbers between the engine and the cradle of the automobile, a obvious fatigue of these will create a subsidence and therefore a space between the engine and the silentblocks, it may happen that a squeaking noise happens when you pass a speed bumps or any holes with your Kia Optima. To change them go to your auto mechanic.
Other speed bump noise Kia Optima
If, even though all its assumptions, you still can’t uncover the origin of the noise your Kia Optima makes when you pass a speed bump, we advise you to consult this content on a loud noise on Kia Optima or to visit your technician in order to carry an in-depth check on your Kia Optima and discover this issue.
