It is never relaxing to experience a sound in your car that you don’t know the starting point of. So, what if you identify a loud noise that remains on your Citroen C4? It is highly plausible that this is a minor trouble, but before beeing sure, it is better to execute some checks. 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 created this article to help you fix it. First, we will summarize the possible causes for the issue according to when loud noise shows up on your Citroen C4, and then we will look into 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 Citroen C4 produce a loud noise?
One way to detect a noise from your Citroen C4 is to define when it occurs. Indeed, some concerns can be related to parts that are only stressed under certain conditions. It is this process that we will focus on in this first part.
Loud noise Citroen C4 when accelerating
Loud noise on Citroen C4 that starts when you are accelerating can be symptomatic of multiple 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 generate a much higher noise than during normal process. Moreover, it is also highly plausible that loud noise on your Citroen C4 is related 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 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 Citroen C4 is stopped
If your Citroen C4 makes a loud noise while not accelerating, engine on, the trouble may be linked 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 Citroen C4 and how can I be sure of its origin?
Now that we have located the origin of the noise, we will focus on the verification step to make sure that this is the issues you are going through.
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The loud noise comes from the wheels of my Citroen C4
As we have seen before, loud noise from the wheels of your Citroen C4 may be linked 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 remember to verify 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 straight away. 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 Citroen C4 that is the trouble, you will tend to feel a vibration in the direction of the car as you go faster. In both situations, you will have to go to your technician to swap the tires or execute a balancing.
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The loud noise comes from the engine of my Citroen C4
In case you have identified loud noise as coming from the engine of your Citroen C4, 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 experience a power loss during your acceleration. If the loud noise on your Citroen C4 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 cause an air intake, if it is just disconnected you can reconnect the air intake tubes yourself. Then verify that the engine idle speed is not random. In case you confirm one of these two trouble, take your car to your garage .
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Loud noise comes from the exhaust pipe of the vehicle
If the noise you have recognized comes from the exhaust pipe of your Citroen C4, it is highly plausible 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 Citroen C4, 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 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.
