Discovering noises from your car frequently is never comforting, so listening noises on your Alfa Romeo 159 suspensions when you go over a speed bump can be disturbing. This symptom may be a sign of a insignificant issue 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 issue, it is with this goal in mind that we wanted to write this document to help you see more clearly. We will first see the possible causes for a crack when the speed bump passes, after that, 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 Alfa Romeo 159
Check Alfa Romeo 159 suspension
If you encounter a suspension noise when you pass a speed bump on your Alfa Romeo 159, 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 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 function during small bumps that compress the suspensions. To verify if this is the issue that concerns 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 ruin other parts and have to make more important repairs.
Check the cardan shaft
If you are here because you have searched for “Alfa Romeo 159 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 In fact, when the cardan bellows get outdated and the dirt/dust amasses inside them their working is degraded and it is possible to experience a noise when they are in torsion.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 circumstances you should consider changing it or them. If you have the feeling that this noise is more like a a loud noise on Alfa Romeo 159, don’t hesitate to read this document.
Check steering hinges/stabilizer bar
Finally, when you know a suspension noise when your Alfa Romeo 159 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 modify direction. If this is the situation, the parts that may have been destroyed by regular wear and tear or impacts (e. g. sidewalks). The steering hinges, the stabilizer bar hinges. can be the causes of your noises, to verify it, put it under the automobile and apply twists on each of its elements to verify that there is no special play on one of them, they are meant to resist you quite strongly over their entire travel. Keep in mind to take your vehicle to your technician or replace them if they are involved.
squeaky noise speed bump Alfa Romeo 159
Check the stabilizer bar
If, alternatively, you have a noise that is more like a squeak when you go over a speed bump with your Alfa Romeo 159, it is possible that it is the stabilizer bar itself that is involved. In fact, abnormal/pronounced wear of the latter can cause uncommon friction which can cause this squeaking noise. Keep in mind to verify by passing under your automobile the condition of the paint on your bar which will show if there is friction. Second possible explanation, it may be your stabilizer bar silentblocks that are dried out and create noise, in which case take them out from the cradle and grease them, this should solve the issue.
Check engine silentblocks
Finally, last case that we can verify together, it is the engine silentblocks, in fact, these silentblocks process 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 happen that a squeaking noise occurs when you pass a speed bumps or any holes with your Alfa Romeo 159. To swap them go to your technician.
Other speed bump noise Alfa Romeo 159
If, despite all its assumptions, you still can’t find the source of the noise your Alfa Romeo 159 makes when you pass a speed bump, we encourage you to read this content on a loud noise on Alfa Romeo 159 or to visit your technician in order to carry an in-depth check on your Alfa Romeo 159 and identify this issue.
