It is never enjoyable to perceive a sound in your car that you don’t know the cause of. So, what if you discern a loud noise that continues on your Audi A4? It is extremely possible that this is a minor problem, but before beeing sure, it is better to operate some inspections. 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 written this content 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 Audi A4, and then we will give attention to the region of origin of the noise. In any case, if this noise continues, follow these advice to help you find the origin.
When does my Audi A4 generate a loud noise?
One way to find a noise from your Audi A4 is to identify when it shows up. Indeed, some problems can be linked to parts that are only stressed under certain circumstances. It is this process that we will focus on in this first part.
Loud noise Audi A4 when accelerating
Loud noise on Audi A4 that occurs when you are accelerating can be symptomatic of multiple failures. Indeed, if you experience 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. Moreover, it is also highly possible that loud noise on your Audi A4 is associated with a wheel bearing, which is one of the most common causes of these types of manifestations. Another alternative is that your exhaust pipe may have holes or a collar may have become loose. Finally, it is also possible that the problem may come from a deformed tire or an unbalanced wheel that will tend to vibrate as it gains speed.
When my Audi A4 is stopped
If your Audi A4 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 Audi A4 and how can I be sure of its origin?
Now that we have determined the cause of the sound, we will look into the verification stage to be certain that this is the matter you are going through.
The loud noise comes from the wheels of my Audi A4
As we have seen previously, loud noise from the wheels of your Audi A4 may be connected 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 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 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 Audi A4 that is the trouble, you will tend to feel a vibration in the direction of the automobile as you go faster. In both cases, you will have to go to your mechanic to change the tires or do a balancing.
The loud noise comes from the engine of my Audi A4
In case you have discovered loud noise as coming from the engine of your Audi A4, 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 Audi A4 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 cause 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 automobile to your service garage .
Loud noise comes from the exhaust pipe of the vehicle
If the noise you have noticed comes from the exhaust pipe of your Audi A4, 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 Audi A4, that a part has been cut off due to wear, or, finally, that a clamp has become loose due to vibrations. To confirm 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.