Finding out noises from your automobile frequently is never reassuring, so discovering noises on your Peugeot 406 suspensions when you go over a speed bump can be worrying. This sign may be a sign of a insignificant problem as well as a warning of a much larger repair to come. In any case, it is necessary to check the cause and take the necessary actions to eliminate the problem, it is with this aim in mind that we wanted to write this article to support you see more clearly. We will first see the possible reasons 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 Peugeot 406
Check Peugeot 406 suspension
If you notice a suspension noise when you pass a speed bump on your Peugeot 406, and it is characterized by a “clack” or cracking, it is highly plausible that your suspension block is the cause 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 job during small bumps that compress the suspensions. To verify if this is the problem that concerns you, take a dented road and listen to the noise coming from your front axle as you drive over holes. If it is indeed the cups, think of swapping them as soon as possible or you may ruin other parts and have to make more important repairs.
Check the cardan shaft
If you are here because you have looked for for “Peugeot 406 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 In fact, when the cardan bellows get out of date and the dirt/dust amasses inside them their functions is deteriorated and it is possible to experience a sound when they are in torsion.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 cases you should consider swapping it or them. If you have the feeling that this noise is more like a a loud noise on Peugeot 406, don’t hesitate to check out this content.
Check steering hinges/stabilizer bar
Finally, when you find out a suspension noise when your Peugeot 406 passes over a speed bumps, it is imaginable that the hinges or the stabilizer bar are responsible. Simply like the gimbals, the steering part is mobilized when you adjust direction. If this is your situation, the components that may have been damaged 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 verify it, place it under the vehicle and apply twists on each of its elements to verify that there is no particular play on one of them, they are expected to endure you quite strongly over their entire travel. Please remember to take your Peugeot 406 to your auto mechanic or swap them if they are involved.
squeaky noise speed bump Peugeot 406
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 Peugeot 406, it is plausible that it is the stabilizer bar itself that is concerned. In fact, abnormal/pronounced wear of the latter can cause unusual friction which can cause this squeaking noise. Bear in mind to verify by going under your vehicle the condition of the paint on your bar which will show if there is friction. Second plausible point, it may be your stabilizer bar silentblocks that are dry and create noise, in which case take them out from the cradle and grease them, this should fix the problem.
Check engine silentblocks
Finally, last possibility 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 obvious fatigue of these will create a subsidence and therefore a space between the engine and the silentblocks, it may happen that a squeaking noise appears when you pass a speed bumps or any holes with your Peugeot 406. To swap them go to your mechanic.
Other speed bump noise Peugeot 406
If, even though all its assumptions, you still can’t locate the source of the noise your Peugeot 406 makes when you pass a speed bump, we suggest you to consult this content on a loud noise on Peugeot 406 or to visit your auto mechanic in order to carry an in-depth check on your Peugeot 406 and determine this problem.
