It is never relaxing to experience a sound in your car that you don’t know the starting point of. So, what if you recognize a loud noise that persists on your Bmw Serie 3? It is very plausible that this is a minor problem, but before beeing sure, it is better to do some inspections. Whether that loud noise comes from the front of the vehicle, from the rear, whether it shows up when you accelerate or when you are parked, our team has written this content to help you fix it. First, we will detail the possible reasons for the problem according to when loud noise shows up on your Bmw Serie 3, 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 source.
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When does my Bmw Serie 3 produce a loud noise?
One way to discover a noise from your Bmw Serie 3 is to establish when it occurs. Indeed, some trouble can be connected to parts that are only stressed under certain types of conditions. It is this method that we will focus on in this first part.
Loud noise Bmw Serie 3 when accelerating
Loud noise on Bmw Serie 3 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 Bmw Serie 3 is related to a wheel bearing, which is one of the most common causes 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 problem 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 Bmw Serie 3 is stopped
If your Bmw Serie 3 makes a loud noise while not accelerating, engine on, the problem 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 Bmw Serie 3 and how can I be sure of its origin?
Now that we have identified the origin of the sound, we will concentrate on the verification step to ensure that this is the concern you are going through.
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The loud noise comes from the wheels of my Bmw Serie 3
As we have seen before, loud noise from the wheels of your Bmw Serie 3 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 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 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 Bmw Serie 3 that is the problem, you will tend to feel a vibration in the direction of the automobile as you go faster. In both circumstances, you will have to go to your auto technician to change the tires or do a balancing.
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The loud noise comes from the engine of my Bmw Serie 3
In case you have discovered loud noise as coming from the engine of your Bmw Serie 3, the two most likely causes are turbo and air intake. In the first case, a turbo failure may also be connected 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 Bmw Serie 3 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 trouble, 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 recognized comes from the exhaust pipe of your Bmw Serie 3, 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 Bmw Serie 3, 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.
