Listening noises from your car often is never reassuring, so listening noises on your Alfa Romeo 156 suspensions when you go over a speed bump can be stressing. This warning sign may be a sign of a small problem 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 resolve the problem, it is with this objective 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 Alfa Romeo 156
Check Alfa Romeo 156 suspension
If you experience a suspension noise when you pass a speed bump on your Alfa Romeo 156, and it is categorized 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 Indeed, it may be the suspension cups, which, when they are out of date, have the rubber (silentblock) that acts as a buffer and shock absorber for the upper part of the suspension that no longer fulfils its job during small bumps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 problem that worries you, take a dented road and pay attention to the noise coming from your front axle as you drive over holes. If it is indeed the cups, think of replacing them quickly or you may damage other parts and have to make more important vehicle repairs.
Check the cardan shaft
If you are here because you have searched for “Alfa Romeo 156 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 Indeed, when the cardan bellows get out of date and the dirt/dust accumulates inside them their functions is deteriorated and it is possible to experience a sound when they are in torsion.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 situations you should consider replacing it or them. If you have the feeling that this noise is more like a a loud noise on Alfa Romeo 156, don’t hesitate to refer to this document.
Check steering hinges/stabilizer bar
Finally, when you experience a suspension noise when your Alfa Romeo 156 passes over a speed bumps, it is possible that the hinges or the stabilizer bar are responsible. Exactly like the gimbals, the steering part is mobilized when you change direction. If this is the case, the components that may have been damaged by usual 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 car and apply twists on each of its components to verify that there is no particular play on one of them, they are supposed to resist you quite strongly over their entire travel. Remember to take your Alfa Romeo 156 to your auto mechanic or replace them if they are involved.
squeaky noise speed bump Alfa Romeo 156
Check the stabilizer bar
If, on the other hand, you have a noise that is more like a squeak when you go over a speed bump with your Alfa Romeo 156, it is plausible that it is the stabilizer bar itself that is concerned. Indeed, abnormal/pronounced wear of the latter can cause uncommon friction which can provoke this squeaking noise. Please remember to verify by going under your car the condition of the paint on your bar which will tell us if there is friction. Second plausible explanation, it may be your stabilizer bar silentblocks that are dried out and cause noise, in which case take them out from the cradle and grease them, this should eliminate the problem.
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 car, a evident fatigue of these will generate a subsidence and therefore a space between the engine and the silentblocks, it may happen that a squeaking noise shows up when you pass a speed bumps or any holes with your Alfa Romeo 156. To replace them go to your auto technician.
Other speed bump noise Alfa Romeo 156
If, despite all its assumptions, you still can’t uncover the origin of the noise your Alfa Romeo 156 makes when you pass a speed bump, we encourage you to refer to this content on a loud noise on Alfa Romeo 156 or to visit your auto mechanic in order to carry an in-depth check on your Alfa Romeo 156 and determine this problem.
