It is never enjoyable to find out a noise in your vehicle that you don’t know the origin of. So, what if you find a loud noise that is persistant on your Alfa Romeo Giulietta? It is highly plausible that this is a minor trouble, but before beeing sure, it is better to do some verifications. Whether that loud noise comes from the front of the car, from the rear, whether it happens when you accelerate or when you are parked, our team has created 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 Alfa Romeo Giulietta, and then we will look into 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 Alfa Romeo Giulietta generate a loud noise?
One way to identify a noise from your Alfa Romeo Giulietta is to establish when it occurs. Indeed, some complications can be connected to components that are only stressed under certain occasions. It is this approach that we will focus on in this first part.
Loud noise Alfa Romeo Giulietta when accelerating
Loud noise on Alfa Romeo Giulietta that appears when you are accelerating can be symptomatic of multiple failures. Indeed, if you feel 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 use. Furthermore, it is also highly plausible that loud noise on your Alfa Romeo Giulietta is linked to a wheel bearing, which is one of the most common origins 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 trouble 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 Giulietta is stopped
If your Alfa Romeo Giulietta makes a loud noise while not accelerating, engine on, the trouble may be in connection with 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 Alfa Romeo Giulietta and how can I be sure of its origin?
Now that we have defined the source of the noise, we will look into the verification stage to make sure that this is the concern you are having.
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The loud noise comes from the wheels of my Alfa Romeo Giulietta
As we have seen before, loud noise from the wheels of your Alfa Romeo Giulietta may be in connection with 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 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 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 Alfa Romeo Giulietta that is the trouble, 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 swap the tires or do a balancing.
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The loud noise comes from the engine of my Alfa Romeo Giulietta
In case you have identified loud noise as coming from the engine of your Alfa Romeo Giulietta, 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 Giulietta 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 vehicle to your 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 Alfa Romeo Giulietta, it is highly plausible that you have rust if your car 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 Giulietta, 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 car 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.
