It is never relaxing to notice a sound in your car that you don’t know the cause of. So, what if you recognize a loud noise that remains on your Alfa Romeo 159? It is very possible that this is a minor issue, but before beeing sure, it is better to do 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 created this content to help you solve it. First, we will summarize the possible explanations for the problem according to when loud noise shows up on your Alfa Romeo 159, and then we will concentrate on the region of origin of the noise. In any case, if this noise remains, follow these instructions to help you find the source.
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When does my Alfa Romeo 159 generate a loud noise?
One way to discern a noise from your Alfa Romeo 159 is to establish when it appears. Indeed, some complications can be linked to parts that are only stressed under certain occasions. It is this technique that we will focus on in this first part.
Loud noise Alfa Romeo 159 when accelerating
Loud noise on Alfa Romeo 159 that occurs when you are accelerating can be symptomatic of different failures. In fact, if you experience a noise that is louder and louder when you accelerate, it can come from a faulty turbo that will cause a much higher noise than during normal use. Moreover, it is also highly possible that loud noise on your Alfa Romeo 159 is connected 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 Alfa Romeo 159 is stopped
If your Alfa Romeo 159 makes a loud noise while not accelerating, engine on, the issue may be connected 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 Alfa Romeo 159 and how can I be sure of its origin?
Now that we have uncovered the origin of the noise, we will concentrate on the verification stage to be sure that this is the concern you are enduring.
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The loud noise comes from the wheels of my Alfa Romeo 159
As we have seen earlier in this article, loud noise from the wheels of your Alfa Romeo 159 may be connected to two main complications. 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 check 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 swap it or them as soon as possible. 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 Alfa Romeo 159 that is the matter, 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 mechanic to replace the tires or execute a balancing.
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The loud noise comes from the engine of my Alfa Romeo 159
In case you have recognized loud noise as coming from the engine of your Alfa Romeo 159, 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 Alfa Romeo 159 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 generate an air intake, if it is just disconnected you can reconnect the air intake tubes yourself. Then check 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 Alfa Romeo 159, 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 Alfa Romeo 159, 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 source 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.
