Listening noises from your auto frequently is never comforting, so discovering noises on your Audi S4 suspensions when you pass a speed bump can be stressful. This sign may be a sign of a minor trouble as well as a warning of a much larger repair to come. In any case, it is fundamental to check the origin and take the necessary actions to correct the trouble, it is with this aim in mind that we wanted to write this article to support you see more clearly. We will first see the possible explanations 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 Audi S4
Check Audi S4 suspension
If you encounter a suspension noise when you pass a speed bump on your Audi S4, and it is categorized by a “clack” or cracking, it is highly plausible that your suspension block is the origin of it. In fact, it may be the suspension cups, which, when they are dead, 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 verify if this is the trouble that worries you, take a dented road and listen to the noise coming from your front axle as you go over holes. If it is indeed the cups, think of replacing them fairly 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 looked for for “Audi S4 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 amasses inside them their operation is deteriorated and it is possible to experience a sound when they are in torsion. To verify 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 circumstances you should consider swapping it or them. If you have the feeling that this noise is more like a a loud noise on Audi S4, don’t hesitate to consult this content.
Check steering hinges/stabilizer bar
Finally, when you experience a suspension noise when your Audi S4 passes over a speed bumps, it is plausible that the hinges or the stabilizer bar are responsible. Just like the gimbals, the steering part is mobilized when you change direction. If this is your situation, the parts 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 verify it, put it under the automobile and apply twists on each of its components to verify that there is no special play on one of them, they are meant to resist you quite strongly over their entire travel. Remember to take your Audi S4 to your auto mechanic or change them if they are involved.
squeaky noise speed bump Audi S4
Check the stabilizer bar
If, however, you have a noise that is more like a squeak when you pass a speed bump with your Audi S4, 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. Keep in mind to verify by going under your automobile the condition of the paint on your bar which will show if there is friction. Second plausible point, it may be your stabilizer bar silentblocks that are dried out and create noise, in which case remove them from the cradle and grease them, this should eliminate the trouble.
Check engine silentblocks
Finally, last case that we can verify together, it is the engine silentblocks, actually, these silentblocks function as pads/shock absorbers between the engine and the cradle of the auto, a noticable weakness of these will make a subsidence and therefore a space between the engine and the silentblocks, it may happen that a squeaking noise comes up when you pass a speed bumps or any holes with your Audi S4. To swap them go to your auto technician.
Other speed bump noise Audi S4
If, despite all its assumptions, you still can’t find the origin of the noise your Audi S4 makes when you pass a speed bump, we encourage you to refer to this content on a loud noise on Audi S4 or to visit your auto mechanic in order to carry an in-depth check on your Audi S4 and discover this trouble.
