It is never enjoyable to notice a sound in your automobile that you don’t know the origin of. So, what if you identify a loud noise that continues on your Lexus GS? It is extremely plausible that this is a minor issue, but before beeing sure, it is better to carry out some verifications. Whether that loud noise comes from the front of the vehicle, from the rear, whether it shows up when you accelerate or when you are parked, our team has made this content to help you solve it. First, we will detail the possible reasons for the problem according to when loud noise shows up on your Lexus GS, and then we will look into the region of origin of the noise. In any case, if this noise remains, follow these suggestions to help you find the origin.loud-noise-lexus-gs

When does my Lexus GS make a loud noise?

One way to identify a noise from your Lexus GS is to determine when it appears. Indeed, some problems 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 Lexus GS when accelerating

Loud noise on Lexus GS that shows up when you are accelerating can be symptomatic of several failures. Indeed, if you encounter a noise that is louder and louder when you accelerate, it can come from a faulty turbo that will induce a much higher noise than during normal use. Moreover, it is also highly plausible that loud noise on your Lexus GS is connected 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 issue 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 Lexus GS is stopped

If your Lexus GS makes a loud noise while not accelerating, engine on, the issue 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 Lexus GS and how can I be sure of its origin?

Now that we have identified the cause of the noise, we will concentrate on the verification stage to be certain that this is the issues you are encountering.

  • The loud noise comes from the wheels of my Lexus GS

    As we have seen before, loud noise from the wheels of your Lexus GS may be linked 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 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 swap 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 Lexus GS that is the issue, you will tend to feel a vibration in the direction of the car as you go faster. In both cases, you will have to go to your technician to swap the tires or do a balancing.

  • The loud noise comes from the engine of my Lexus GS

    In case you have recognized loud noise as coming from the engine of your Lexus GS, 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 Lexus GS 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 trouble, take your car to your service garage .

  • Loud noise comes from the exhaust pipe of the vehicle

    If the noise you have perceived comes from the exhaust pipe of your Lexus GS, it is highly plausible 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 Lexus GS, 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.