It is never pleasant to experience a sound in your automobile that you don’t know the source of. So, what if you recognize a loud noise that persists on your Citroen Grand C4 Picasso? It is extremely plausible 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 automobile, from the rear, whether it shows up when you accelerate or when you are parked, our team has written this content to help you solve it. First, we will summarize the possible reasons for the problem according to when loud noise appears on your Citroen Grand C4 Picasso, and then we will concentrate on the region of origin of the noise. In any case, if this noise persists, follow these advice to help you find the source.
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When does my Citroen Grand C4 Picasso generate a loud noise?
One way to discover a noise from your Citroen Grand C4 Picasso is to define when it shows up. Indeed, some trouble can be connected to parts that are only stressed under certain circumstances. It is this approach that we will focus on in this first part.
Loud noise Citroen Grand C4 Picasso when accelerating
Loud noise on Citroen Grand C4 Picasso that takes place 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 provoke a much higher noise than during normal use. Moreover, it is also highly plausible that loud noise on your Citroen Grand C4 Picasso is related to a wheel bearing, which is one of the most common causes 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 problem 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 Grand C4 Picasso is stopped
If your Citroen Grand C4 Picasso makes a loud noise while not accelerating, engine on, the problem 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 Citroen Grand C4 Picasso and how can I be sure of its origin?
Now that we have defined the source of the noise, we will deal with the verification step to be sure that this is the issues you are having.
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The loud noise comes from the wheels of my Citroen Grand C4 Picasso
As we have seen previously, loud noise from the wheels of your Citroen Grand C4 Picasso may be in connection with 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 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 replace it or them right 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 Citroen Grand C4 Picasso that is the trouble, you will tend to feel a vibration in the direction of the vehicle as you go faster. In both cases, you will have to go to your auto mechanic to swap the tires or execute a balancing.
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The loud noise comes from the engine of my Citroen Grand C4 Picasso
In case you have discovered loud noise as coming from the engine of your Citroen Grand C4 Picasso, the two most likely causes are turbo and air intake. In the first case, a turbo failure may also be linked to 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 Grand C4 Picasso 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 generate 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 problems, take your vehicle to your mechanic .
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Loud noise comes from the exhaust pipe of the vehicle
If the noise you have detected comes from the exhaust pipe of your Citroen Grand C4 Picasso, 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 Grand C4 Picasso, 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 automobile while you accelerate to find the exact area of source 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.
