It is never pleasant to hear a sound in your automobile that you don’t know the cause of. So, what if you detect a loud noise that remains on your Volkswagen Jetta? It is very possible that this is a minor issue, but before beeing sure, it is better to accomplish some checks. Whether that loud noise comes from the front of the vehicle, from the rear, whether it appears when you accelerate or when you are parked, our team has written this article to help you solve it. First, we will summarize the possible causes for the problem according to when loud noise appears on your Volkswagen Jetta, and then we will look into the region of origin of the noise. In any case, if this noise lasts, follow these advice to help you find the source.
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When does my Volkswagen Jetta produce a loud noise?
One way to discover a noise from your Volkswagen Jetta is to establish when it occurs. Indeed, some complications can be related to components that are only stressed under certain conditions. It is this method that we will focus on in this first part.
Loud noise Volkswagen Jetta when accelerating
Loud noise on Volkswagen Jetta that happens when you are accelerating can be symptomatic of several failures. Indeed, 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 Jetta 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 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 Jetta is stopped
If your Volkswagen Jetta makes a loud noise while not accelerating, engine on, the issue 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 Jetta and how can I be sure of its origin?
Now that we have located the source of the sound, we will deal with the verification step to be certain that this is the concern you are going through.
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The loud noise comes from the wheels of my Volkswagen Jetta
As we have seen before, loud noise from the wheels of your Volkswagen Jetta may be in connection with two main trouble. 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 remember to verify 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 Jetta that is the problem, you will tend to feel a vibration in the direction of the automobile as you go faster. In both situations, you will have to go to your auto technician to swap the tires or perform a balancing.
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The loud noise comes from the engine of my Volkswagen Jetta
In case you have identified loud noise as coming from the engine of your Volkswagen Jetta, the two most likely causes are turbo and air intake. In the first case, a turbo failure may also be associated with 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 Jetta 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 verify that the engine idle speed is not random. In case you confirm one of these two disorders, take your automobile to your mechanic .
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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 Jetta, 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 Jetta, 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 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.
