It is never relaxing to find out a sound in your car that you don’t know the origin of. So, what if you discover a loud noise that is persistant on your Volkswagen Transporter 4? It is extremely plausible that this is a minor issue, but before beeing sure, it is better to operate some checks. Whether that loud noise comes from the front of the automobile, from the rear, whether it happens when you accelerate or when you are parked, our team has written this article to help you solve it. First, we will describe the possible causes for the issue according to when loud noise appears on your Volkswagen Transporter 4, and then we will focus on the region of origin of the noise. In any case, if this noise lasts, follow these recommendations to help you find the origin.
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When does my Volkswagen Transporter 4 generate a loud noise?
One way to discern a noise from your Volkswagen Transporter 4 is to determine when it shows up. Indeed, some problems can be connected to components that are only stressed under certain conditions. It is this process that we will focus on in this first part.
Loud noise Volkswagen Transporter 4 when accelerating
Loud noise on Volkswagen Transporter 4 that appears when you are accelerating can be symptomatic of multiple failures. In fact, if you encounter a noise that is louder and louder when you accelerate, it can come from a faulty turbo that will create a much higher noise than during normal process. In addition, it is also highly plausible that loud noise on your Volkswagen Transporter 4 is associated with a wheel bearing, which is one of the most common origins of these types of symptoms. Another alternative is that your exhaust pipe may have holes or a collar may have become loose. Finally, it is also plausible that the issue may come from a deformed tire or an unbalanced wheel that will tend to vibrate as it increases speed.
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When my Volkswagen Transporter 4 is stopped
If your Volkswagen Transporter 4 makes a loud noise while not accelerating, engine on, the issue may be connected to poor air intake. An air intake hose that has come loose or has a hole in it may be the reason.
Where does loud noise come from on my Volkswagen Transporter 4 and how can I be sure of its origin?
Now that we have identified the cause of the noise, we will look into the verification stage to ensure that this is the issues you are enduring.
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The loud noise comes from the wheels of my Volkswagen Transporter 4
As we have seen previously, loud noise from the wheels of your Volkswagen Transporter 4 may be connected to two main complications. 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 consider 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 change it or them quickly. If it is a deformed tire, make sure to visually check the entire tread area for linearity. If it is the balancing of the wheels of your Volkswagen Transporter 4 that is the problem, you will tend to feel a vibration in the direction of the vehicle as you go faster. In both situations, you will have to go to your technician to replace the tires or do a balancing.
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The loud noise comes from the engine of my Volkswagen Transporter 4
In case you have recognized loud noise as coming from the engine of your Volkswagen Transporter 4, the two most likely causes are turbo and air intake. In the first case, a turbo failure may also be linked 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 Transporter 4 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 generate 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 trouble, take your vehicle to your service garage .
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Loud noise comes from the exhaust pipe of the vehicle
If the noise you have noticed comes from the exhaust pipe of your Volkswagen Transporter 4, it is highly plausible that you have rust if your automobile is old and has created holes in it over time and therefore generates a very high noise close to aircraft noise on your Volkswagen Transporter 4, 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 automobile while you accelerate to find the exact area of starting point 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.
