Finding out noises from your automobile regularly is never comforting, so hearing noises on your Volkswagen Transporter 4 suspensions when you pass a speed bump can be stressful. This sign 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 fundamental to check the cause and take the necessary actions to solve the issue, it is with this objective in mind that we wanted to write this content 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 Volkswagen Transporter 4
Check Volkswagen Transporter 4 suspension
If you notice a suspension noise when you pass a speed bump on your Volkswagen Transporter 4, and it is characterized by a “clack” or cracking, it is highly possible that your suspension block is the cause of it. Indeed, 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 job during small bumps that compress the suspensions. To examine if this is the issue 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 changing them fairly quickly or you may affect other parts and have to make more important vehicle repairs.
Check the cardan shaft
If you are here because you have searched for “Volkswagen Transporter 4 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 Indeed, when the cardan bellows get outdated and the dirt/dust accumulates inside them their working is deteriorated and it is possible to experience a sound when they are in torsion.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 make a turn at low speed. If it cracks in these two conditions you should consider replacing it or them. If you have the feeling that this noise is more like a a loud noise on Volkswagen Transporter 4, don’t hesitate to check out this document.
Check steering hinges/stabilizer bar
Finally, when you find out a suspension noise when your Volkswagen Transporter 4 passes over a speed bumps, it is plausible 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 the situation, 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 origins of your noises, to examine it, put it under the car and apply twists on each of its components to examine that there is no particular play on one of them, they are meant to resist you quite strongly over their entire travel. Keep in mind to take your Volkswagen Transporter 4 to your mechanic or swap them if they are involved.
squeaky noise speed bump Volkswagen Transporter 4
Check the stabilizer bar
If, alternatively, you have a noise that is more like a squeak when you pass a speed bump with your Volkswagen Transporter 4, it is possible that it is the stabilizer bar itself that is involved. Indeed, abnormal/pronounced wear of the latter can cause abnormal friction which can cause this squeaking noise. Keep in mind to examine by passing under your car 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 provoke noise, in which case take them off from the cradle and grease them, this should resolve the issue.
Check engine silentblocks
Finally, last point that we can examine together, it is the engine silentblocks, in fact, these silentblocks act as pads/shock absorbers between the engine and the cradle of the automobile, a noticable fatigue of these will make a subsidence and therefore a space between the engine and the silentblocks, it may happen that a squeaking noise comes up when you pass a speed bumps or any holes with your Volkswagen Transporter 4. To swap them go to your auto mechanic.
Other speed bump noise Volkswagen Transporter 4
If, even though all its assumptions, you still can’t locate the origin of the noise your Volkswagen Transporter 4 makes when you pass a speed bump, we recommend you to refer to this article on a loud noise on Volkswagen Transporter 4 or to visit your mechanic in order to carry an in-depth check on your Volkswagen Transporter 4 and identify this issue.
