Hearing noises from your auto regularly is never reassuring, so listening noises on your Opel Astra suspensions when you pass a speed bump can be stressing. This warning sign may be a sign of a small trouble as well as a warning of a much larger repair to come. In any case, it is fundamental to check the cause and take the necessary actions to eliminate the trouble, it is with this aim in mind that we wanted to write this content to help you see more clearly. We will first see the possible causes for a crack when the speed bump passes, then, 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 Opel Astra
Check Opel Astra suspension
If you notice a suspension noise when you pass a speed bump on your Opel Astra, and it is characterized by a “clack” or cracking, it is highly possible that your suspension block is the origin of it. In fact, it may be the suspension cups, which, when they are outdated, have the rubber (silentblock) that acts as a buffer and shock absorber for the upper part of the suspension that no longer fulfils its job during small bumps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 check if this is the trouble that worries you, take a dented road and listen to the noise coming from your front axle as you circulate over holes. If it is indeed the cups, think of changing them fairly quickly or you may affect other parts and have to make more important fixes.
Check the cardan shaft
If you are here because you have researched for “Opel Astra 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 In fact, when the cardan bellows get outdated and the dirt/dust amasses inside them their action is degraded and it is possible to experience a noise when they are in torsion.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 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 Opel Astra, don’t hesitate to check out this article.
Check steering hinges/stabilizer bar
Finally, when you know a suspension noise when your Opel Astra 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 vary direction. If this is your situation, the components that may have been broken 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, place it under the car and apply twists on each of its components to check that there is no particular play on one of them, they are meant to endure you quite strongly over their entire travel. Remember to take your Opel Astra to your auto technician or replace them if they are involved.
squeaky noise speed bump Opel Astra
Check the stabilizer bar
If, alternatively, you have a noise that is more like a squeak when you pass a speed bump with your Opel Astra, it is possible that it is the stabilizer bar itself that is concerned. In fact, abnormal/pronounced wear of the latter can cause uncommon friction which can create this squeaking noise. Please remember to check by going under your car the condition of the paint on your bar which will tell us if there is friction. Second possible point, 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 fix the trouble.
Check engine silentblocks
Finally, last possibility that we can check together, it is the engine silentblocks, actually, these silentblocks process as pads/shock absorbers between the engine and the cradle of the auto, a evident weakness of these will make 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 Opel Astra. To change them go to your auto technician.
Other speed bump noise Opel Astra
If, even though all its assumptions, you still can’t uncover the source of the noise your Opel Astra makes when you pass a speed bump, we recommend you to refer to this content on a loud noise on Opel Astra or to visit your auto technician in order to carry an in-depth check on your Opel Astra and find this trouble.
