It is never enjoyable to perceive a noise in your automobile that you don’t know the origin of. So, what if you identify a loud noise that persists on your Subaru Legacy? It is very possible that this is a minor trouble, but before beeing sure, it is better to do some investigations. Whether that loud noise comes from the front of the automobile, from the rear, whether it happens when you accelerate or when you are parked, our team has written this article to help you solve it. First, we will point out the possible reasons for the trouble according to when loud noise shows up on your Subaru Legacy, and then we will concentrate on the region of origin of the noise. In any case, if this noise continues, follow these suggestions to help you find the source.
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When does my Subaru Legacy make a loud noise?
One way to find a noise from your Subaru Legacy is to define when it occurs. Indeed, some complications can be connected to parts that are only stressed under certain conditions. It is this approach that we will focus on in this first part.
Loud noise Subaru Legacy when accelerating
Loud noise on Subaru Legacy that shows up 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 generate a much higher noise than during normal operation. Moreover, it is also highly possible that loud noise on your Subaru Legacy is linked to a wheel bearing, which is one of the most common origins of these types of symptoms. Another possibility is that your exhaust pipe may have holes or a collar may have become loose. Finally, it is also possible that the trouble may come from a deformed tire or an unbalanced wheel that will tend to vibrate as it increases speed.
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When my Subaru Legacy is stopped
If your Subaru Legacy makes a loud noise while not accelerating, engine on, the trouble may be related 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 Subaru Legacy and how can I be sure of its origin?
Now that we have identified the cause of the sound, we will deal with the verification step to make certain that this is the concern you are encountering.
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The loud noise comes from the wheels of my Subaru Legacy
As we have seen before, loud noise from the wheels of your Subaru Legacy 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 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 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 Subaru Legacy that is the matter, you will tend to feel a vibration in the direction of the car as you go faster. In both cases, 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 Subaru Legacy
In case you have identified loud noise as coming from the engine of your Subaru Legacy, 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 Subaru Legacy 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 induce 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 trouble, take your car 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 Subaru Legacy, it is highly possible that you have rust if your automobile is old and has created holes in it over time and therefore generates a very high noise close to aircraft noise on your Subaru Legacy, 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 automobile 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.
