It is never pleasant to hear a noise in your automobile that you don’t know the origin of. So, what if you find a loud noise that remains on your Citroen C4 Aircross? It is highly possible that this is a minor problem, but before beeing sure, it is better to complete some inspections. Whether that loud noise comes from the front of the car, from the rear, whether it shows up when you accelerate or when you are parked, our team has made this content to help you fix it. First, we will point out the possible reasons for the problem according to when loud noise appears on your Citroen C4 Aircross, and then we will give attention to the region of origin of the noise. In any case, if this noise continues, follow these suggestions to help you find the origin.
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When does my Citroen C4 Aircross generate a loud noise?
One way to discern a noise from your Citroen C4 Aircross is to identify when it shows up. Indeed, some problems can be connected to parts that are only stressed under certain types of conditions. It is this technique that we will focus on in this first part.
Loud noise Citroen C4 Aircross when accelerating
Loud noise on Citroen C4 Aircross that occurs 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 cause a much higher noise than during normal operation. In addition, it is also highly possible that loud noise on your Citroen C4 Aircross is connected to a wheel bearing, which is one of the most common origins 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 increases speed.
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When my Citroen C4 Aircross is stopped
If your Citroen C4 Aircross 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 Citroen C4 Aircross and how can I be sure of its origin?
Now that we have found the origin of the noise, we will focus on the verification step to ensure that this is the matter you are going through.
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The loud noise comes from the wheels of my Citroen C4 Aircross
As we have seen before, loud noise from the wheels of your Citroen C4 Aircross 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 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 replace 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 Citroen C4 Aircross that is the issue, 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 auto technician to replace the tires or do a balancing.
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The loud noise comes from the engine of my Citroen C4 Aircross
In case you have identified loud noise as coming from the engine of your Citroen C4 Aircross, 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 experience a power loss during your acceleration. If the loud noise on your Citroen C4 Aircross 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 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 service garage .
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Loud noise comes from the exhaust pipe of the vehicle
If the noise you have discovered comes from the exhaust pipe of your Citroen C4 Aircross, it is highly possible 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 Citroen C4 Aircross, that a part has been cut off due to wear, or, finally, that a clamp has become loose due to vibrations. To verify this, get help from someone who will stand under the car 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.
