It is never enjoyable to perceive a sound in your vehicle that you don’t know the source of. So, what if you detect a loud noise that remains on your Volkswagen Multivan? It is extremely possible that this is a minor trouble, but before beeing sure, it is better to do some verifications. Whether that loud noise comes from the front of the vehicle, from the rear, whether it happens when you accelerate or when you are parked, our team has written this content to help you solve it. First, we will point out the possible causes for the trouble according to when loud noise shows up on your Volkswagen Multivan, and then we will give attention to the region of origin of the noise. In any case, if this noise persists, follow these suggestions to help you find the origin.
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When does my Volkswagen Multivan generate a loud noise?
One way to discover a noise from your Volkswagen Multivan is to identify when it appears. Indeed, some problems can be related to components that are only stressed under certain occasions. It is this technique that we will focus on in this first part.
Loud noise Volkswagen Multivan when accelerating
Loud noise on Volkswagen Multivan that takes place when you are accelerating can be symptomatic of several failures. In fact, if you feel a noise that is louder and louder when you accelerate, it can come from a faulty turbo that will induce a much higher noise than during normal use. Furthermore, it is also highly possible that loud noise on your Volkswagen Multivan is connected to a wheel bearing, which is one of the most common causes of these types of manifestations. Another possibility is that your exhaust pipe may have holes or a collar may have become loose. Finally, it is also possible that the trouble may come from a deformed tire or an unbalanced wheel that will tend to vibrate as it gains speed.
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When my Volkswagen Multivan is stopped
If your Volkswagen Multivan makes a loud noise while not accelerating, engine on, the trouble may be in connection with poor air intake. An air intake hose that has come loose or has a hole in it may be the cause.
Where does loud noise come from on my Volkswagen Multivan and how can I be sure of its origin?
Now that we have determined the origin of the noise, we will look into the verification stage to make sure that this is the issues you are enduring.
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The loud noise comes from the wheels of my Volkswagen Multivan
As we have seen previously, loud noise from the wheels of your Volkswagen Multivan may be in connection with two main disorders. If it is one of your tired bearings, it will tend to make a thumping noise that intensifies when it is under stress (spins faster and faster). So keep in mind to check by driving “fast” (neutral gear on and window open to hear only the noise of the wheels) that the noise is located here, if this is the case swap it or them straight away. If it is a deformed tire, remember to visually check the entire tread area for linearity. If it is the balancing of the wheels of your Volkswagen Multivan that is the problem, you will tend to feel a vibration in the direction of the vehicle as you go faster. In both circumstances, you will have to go to your auto mechanic to swap the tires or execute a balancing.
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The loud noise comes from the engine of my Volkswagen Multivan
In case you have identified loud noise as coming from the engine of your Volkswagen Multivan, the two most likely causes are turbo and air intake. In the first case, a turbo failure may also be connected to a compression loss during the engine ramp-up phase, so you should encounter a power loss during your acceleration. If the loud noise on your Volkswagen Multivan is related to air intake, the check will be done mainly visually, check all your air intake hoses by a visual control in your engine block to be sure that it is not damaged or disconnected which would cause an air intake, if it is just disconnected you can reconnect the air intake tubes yourself. Then check that the engine idle speed is not random. In case you confirm one of these two problems, take your vehicle to your garage .
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Loud noise comes from the exhaust pipe of the vehicle
If the noise you have detected comes from the exhaust pipe of your Volkswagen Multivan, it is highly possible that you have rust if your vehicle is old and has created holes in it over time and therefore generates a very high noise close to aircraft noise on your Volkswagen Multivan, that a part has been cut off due to wear, or, finally, that a clamp has become loose due to vibrations. To validate this, get help from someone who will stand under the vehicle while you accelerate to find the exact area of origin of this noise. If it is a hole, you can repair it with a putty provided for this purpose, or, if it is a collar, “reattach” it. If it is cut or the hole is too big, it is better to get closer to your mechanic.
