It is never pleasant to hear a noise in your automobile that you don’t know the origin of. So, what if you discover a loud noise that is persistant on your Volkswagen Polo 5? It is very possible that this is a minor issue, but before beeing sure, it is better to carry out some investigations. 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 made this article to help you fix it. First, we will detail the possible explanations for the problem according to when loud noise appears on your Volkswagen Polo 5, and then we will concentrate on the region of origin of the noise. In any case, if this noise lasts, follow these instructions to help you find the origin.
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When does my Volkswagen Polo 5 make a loud noise?
One way to detect a noise from your Volkswagen Polo 5 is to establish when it appears. Indeed, some trouble can be related to parts that are only stressed under certain conditions. It is this process that we will focus on in this first part.
Loud noise Volkswagen Polo 5 when accelerating
Loud noise on Volkswagen Polo 5 that happens when you are accelerating can be symptomatic of different failures. Indeed, if you experience a noise that is louder and louder when you accelerate, it can come from a faulty turbo that will provoke a much higher noise than during normal process. Moreover, it is also highly possible that loud noise on your Volkswagen Polo 5 is linked to a wheel bearing, which is one of the most common origins of these types of signs of illness. Another alternative 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 gains speed.
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When my Volkswagen Polo 5 is stopped
If your Volkswagen Polo 5 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 reason.
Where does loud noise come from on my Volkswagen Polo 5 and how can I be sure of its origin?
Now that we have uncovered the cause of the noise, we will deal with the verification stage to be sure that this is the concern you are going through.
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The loud noise comes from the wheels of my Volkswagen Polo 5
As we have seen earlier in this article, loud noise from the wheels of your Volkswagen Polo 5 may be related to two main problems. 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 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 straight away. If it is a deformed tire, don’t forget to visually check the entire tread area for linearity. If it is the balancing of the wheels of your Volkswagen Polo 5 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 technician to replace the tires or accomplish a balancing.
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The loud noise comes from the engine of my Volkswagen Polo 5
In case you have identified loud noise as coming from the engine of your Volkswagen Polo 5, 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 experience a power loss during your acceleration. If the loud noise on your Volkswagen Polo 5 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 verify that the engine idle speed is not random. In case you confirm one of these two problems, take your vehicle 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 Polo 5, 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 Polo 5, that a part has been cut off due to wear, or, finally, that a clamp has become loose due to vibrations. To verify 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.
