Experiencing noises from your car often is never reassuring, so listening noises on your Opel Astra 5 suspensions when you go over a speed bump can be stressing. This symptom may be a sign of a small issue as well as a warning of a much larger repair to come. In any case, it is essential to check the origin and take the necessary actions to eliminate the issue, it is with this goal in mind that we wanted to write this document to support 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 Opel Astra 5
Check Opel Astra 5 suspension
If you encounter a suspension noise when you pass a speed bump on your Opel Astra 5, and it is characterized by a “clack” or cracking, it is highly possible that your suspension block is the cause 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 examine if this is the issue that worries you, take a dented road and focus on the noise coming from your front axle as you pass over holes. If it is indeed the cups, think of swapping them fairly quickly or you may affect other parts and have to make more important repairs.
Check the cardan shaft
If you are here because you have researched for “Opel Astra 5 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 In fact, when the cardan bellows get outdated and the dirt/dust accumulates inside them their operation is deteriorated and it is possible to experience a noise when they are in torsion. To examine 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 swapping it or them. If you have the feeling that this noise is more like a a loud noise on Opel Astra 5, don’t hesitate to read this content.
Check steering hinges/stabilizer bar
Finally, when you find out a suspension noise when your Opel Astra 5 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 adjust direction. If this is the situation, the parts 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 causes of your noises, to examine it, position it under the automobile and apply twists on each of its components to examine that there is no special 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 Opel Astra 5
Check the stabilizer bar
If, however, you have a noise that is more like a squeak when you go over a speed bump with your Opel Astra 5, it is possible that it is the stabilizer bar itself that is involved. In fact, abnormal/pronounced wear of the latter can cause abnormal friction which can generate this squeaking noise. Bear in mind to examine by passing under your automobile the condition of the paint on your bar which will show if there is friction. Second possible point, it may be your stabilizer bar silentblocks that are dry and create noise, in which case remove them from the cradle and grease them, this should eliminate the issue.
Check engine silentblocks
Finally, last possibility that we can examine together, it is the engine silentblocks, actually, these silentblocks operate as pads/shock absorbers between the engine and the cradle of the car, a pronounced 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 Opel Astra 5. To swap them go to your technician.
Other speed bump noise Opel Astra 5
If, despite all its assumptions, you still can’t uncover the source of the noise your Opel Astra 5 makes when you pass a speed bump, we suggest you to consult this content on a loud noise on Opel Astra 5 or to visit your technician in order to carry an in-depth check on your Opel Astra 5 and identify this issue.
