Discovering noises from your automobile often is never comforting, so hearing noises on your Audi A8 suspensions when you pass a speed bump can be stressing. This indicator may be a sign of a minor trouble as well as a warning of a much larger repair to come. Whatever the case, it is important to check the origin and take the necessary actions to correct the trouble, it is with this objective in mind that we wanted to write this article to help you see more clearly. We will first see the possible explanations for a crack when the speed bump passes, after that, what can be the cause 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 A8
Check Audi A8 suspension
If you experience a suspension noise when you pass a speed bump on your Audi A8, and it is characterized by a “clack” or cracking, it is highly plausible that your suspension block is the cause of it. Indeed, it may be the suspension cups, which, when they are old, have the rubber (silentblock) that acts as a buffer and shock absorber for the upper part of the suspension that no longer fulfils its job 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 swapping them as soon as possible or you may affect other parts and have to make more important auto repairs.
Check the cardan shaft
If you are here because you have researched for “Audi A8 suspension noise” and the suspension is not the cause of your problem, it may be that the cardan shaft is responsible. Indeed, when the cardan bellows get outdated and the dirt/dust amasses inside them their action is deteriorated and it is possible to experience a noise when they are in torsion.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 turn at low speed. If it cracks in these two conditions you should consider replacing it or them. If you have the feeling that this noise is more like a a loud noise on Audi A8, don’t hesitate to check out this article.
Check steering hinges/stabilizer bar
Finally, when you recognise a suspension noise when your Audi A8 passes over a speed bumps, it is possible 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 broken by usual 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, position it under the vehicle and apply twists on each of its components to verify that there is no special play on one of them, they are expected to endure you quite strongly over their entire travel. Remember to take your Audi A8 to your auto technician or change them if they are involved.
squeaky noise speed bump Audi A8
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 A8, it is plausible that it is the stabilizer bar itself that is involved. Indeed, abnormal/pronounced wear of the latter can cause abnormal friction which can create this squeaking noise. Bear in mind to verify by going under your vehicle the condition of the paint on your bar which will indicate if there is friction. Second plausible explanation, it may be your stabilizer bar silentblocks that are dry and provoke noise, in which case take them off 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, in fact, these silentblocks work as pads/shock absorbers between the engine and the cradle of the automobile, a evident fatigue of these will make a subsidence and therefore a space between the engine and the silentblocks, it may appear that a squeaking noise occurs when you pass a speed bumps or any holes with your Audi A8. To swap them go to your mechanic.
Other speed bump noise Audi A8
If, despite all its assumptions, you still can’t find the source of the noise your Audi A8 makes when you pass a speed bump, we recommend you to read this article on a loud noise on Audi A8 or to visit your auto technician in order to carry an in-depth check on your Audi A8 and discover this trouble.
