It is never relaxing to hear a sound in your automobile that you don’t know the cause of. So, what if you identify a loud noise that lasts on your BMW 5 Series? It is extremely plausible that this is a minor problem, 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 happens when you accelerate or when you are parked, our team has made this article to help you fix it. First, we will summarize the possible explanations for the issue according to when loud noise appears on your BMW 5 Series, and then we will concentrate on the region of origin of the noise. In any case, if this noise persists, follow these advice to help you find the origin.
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When does my BMW 5 Series make a loud noise?
One way to detect a noise from your BMW 5 Series is to establish when it shows up. Indeed, some concerns can be linked to components that are only stressed under certain occasions. It is this method that we will focus on in this first part.
Loud noise BMW 5 Series when accelerating
Loud noise on BMW 5 Series that happens when you are accelerating can be symptomatic of several 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 5 Series is related to a wheel bearing, which is one of the most common origins of these types of signs of illness. Another possibility 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 5 Series is stopped
If your BMW 5 Series makes a loud noise while not accelerating, engine on, the problem may be connected to poor air intake. An air intake hose that has come loose or has a hole in it may be the induce.
Where does loud noise come from on my BMW 5 Series and how can I be sure of its origin?
Now that we have determined the origin of the noise, we will look into 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 BMW 5 Series
As we have seen before, loud noise from the wheels of your BMW 5 Series may be connected to two main disorders. 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 bear in mind to examine 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 as soon as possible. If it is a deformed tire, remember to visually check the entire tread area for linearity. If it is the balancing of the wheels of your BMW 5 Series that is the issue, 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 replace the tires or execute a balancing.
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The loud noise comes from the engine of my BMW 5 Series
In case you have identified loud noise as coming from the engine of your BMW 5 Series, the two most likely causes are turbo and air intake. In the first case, a turbo failure may also be connected 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 BMW 5 Series 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 examine 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 BMW 5 Series, 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 5 Series, 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 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.
