Discovering noises from your car regularly is never comforting, so discovering noises on your Renault Laguna 3 suspensions when you go over a speed bump can be stressful. This warning sign may be a sign of a minor problem as well as a warning of a much larger repair to come. In any case, it is fundamental to check the origin and take the necessary actions to eliminate the problem, it is with this aim in mind that we wanted to write this document to help 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 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 Renault Laguna 3
Check Renault Laguna 3 suspension
If you experience a suspension noise when you pass a speed bump on your Renault Laguna 3, 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 job during small bumps that compress the suspensions. To verify if this is the problem that concerns you, take a dented road and pay attention to the noise coming from your front axle as you go over holes. If it is indeed the cups, think of swapping them quickly or you may ruin other parts and have to make more important fixes.
Check the cardan shaft
If you are here because you have researched for “Renault Laguna 3 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 In fact, when the cardan bellows get outdated and the dirt/dust amasses inside them their operation is deteriorated and it is possible to experience a sound when they are in torsion.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 turn at low speed. If it cracks in these two situations you should consider changing it or them. If you have the feeling that this noise is more like a a loud noise on Renault Laguna 3, don’t hesitate to check out this document.
Check steering hinges/stabilizer bar
Finally, when you know a suspension noise when your Renault Laguna 3 passes over a speed bumps, it is possible that the hinges or the stabilizer bar are responsible. Simply like the gimbals, the steering part is mobilized when you change direction. If this is the case, the parts that may have been affected 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, position it under the automobile and apply twists on each of its elements to verify that there is no particular play on one of them, they are expected to resist you quite strongly over their entire travel. Please remember to take your vehicle to your mechanic or change them if they are involved.
squeaky noise speed bump Renault Laguna 3
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 Renault Laguna 3, 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 verify by passing under your automobile the condition of the paint on your bar which will reveal 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 problem.
Check engine silentblocks
Finally, last possibility 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 evident weakness of these will create 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 Renault Laguna 3. To replace them go to your auto technician.
Other speed bump noise Renault Laguna 3
If, even though all its assumptions, you still can’t find the source of the noise your Renault Laguna 3 makes when you pass a speed bump, we recommend you to refer to this content on a loud noise on Renault Laguna 3 or to visit your mechanic in order to carry an in-depth check on your Renault Laguna 3 and determine this problem.
