It is never relaxing to find out a sound in your automobile that you don’t know the source of. So, what if you identify a loud noise that lasts on your Volkswagen Passat ? It is very plausible that this is a minor issue, but before beeing sure, it is better to operate 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 created this content to help you fix it. First, we will point out the possible reasons for the issue according to when loud noise appears on your Volkswagen Passat , and then we will concentrate on the region of origin of the noise. In any case, if this noise persists, follow these recommendations to help you find the source.
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When does my Volkswagen Passat make a loud noise?
One way to identify a noise from your Volkswagen Passat is to define when it shows up. Indeed, some concerns 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 Passat when accelerating
Loud noise on Volkswagen Passat that occurs 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 plausible that loud noise on your Volkswagen Passat is in connection with a wheel bearing, which is one of the most common causes of these types of manifestations. 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 gains speed.
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When my Volkswagen Passat is stopped
If your Volkswagen Passat makes a loud noise while not accelerating, engine on, the issue may be related to 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 Passat and how can I be sure of its origin?
Now that we have located the source of the noise, we will deal with the verification stage to be sure that this is the issues you are having.
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The loud noise comes from the wheels of my Volkswagen Passat
As we have seen before, loud noise from the wheels of your Volkswagen Passat may be related to 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 consider 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 replace it or them as soon as possible. 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 Passat that is the matter, 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 mechanic to swap the tires or accomplish a balancing.
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The loud noise comes from the engine of my Volkswagen Passat
In case you have recognized loud noise as coming from the engine of your Volkswagen Passat , 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 Passat is related to air intake, the control 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 induce 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 problems, 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 found comes from the exhaust pipe of your Volkswagen Passat , it is highly plausible 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 Passat , that a part has been cut off due to wear, or, finally, that a clamp has become loose due to vibrations. To ensure 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.
