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2009 e350 sport
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2009 E350 Sport (Staggered Wheels) 83k miles , rear wheel drive, NOT 4matic . 722.9 transmission
Transmission serviced 2 years ago ( 15k miles since then) New Michelin tyres AS Sport. Changed tyres as the previous ones became very noisy.
For about a years or so I have been noticing two distinct noises from the car.
The first is a low frequency rumble which is not constant but cyclical and is more pronounced at speed up to 45mph , give or take
Sounds like bluuum....bluuuum.....bluuum. This produces a corresponding mild vibration in the car as well.
The next is a higher frequency swishy sound more noticeable under , say , 50mph . Sounds like weeech ....weeech....weeech. This weeech sounds changes in duration ( faster) as the speed of the car increases till it is no longer noticed.
While I am driving at the speeds that these two sounds are present I put the car in neutral and both sounds disappear. What I hear then is just the road noise .
Any suggestions what maybe causing these issues?
 

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[QUOTE = "Paul Ram, gönderi: 17916465, üye: 502153"]
2009 E350 Sport (Staggered Wheels) 83km mil, arkadan çekişli, 4 OLMAYAN. 722.9 iletim
Şanzıman 2 yıl önce hizmet vermiştir (o tarihten beri 15 mil) Yeni Michelin lastikleri AS Sport. Önceki lastikler olarak değiştirilen lastikler çok gürültülü oldu.
Yaklaşık bir süredir arabadan iki ayrı ses çıkarıyorum.
Birincisi, sabit olmayan fakat döngüsel olan ve 45mph hıza kadar daha belirgin olan, veren veya alan düşük frekanslı bir gürültü
Bluuum gibi geliyor .... bluuuum ..... bluuum. Bu da otomobilde buna karşılık gelen hafif bir titreşim üretir.
Bir sonraki, 50mph altında daha belirgin olan daha yüksek frekanslı bir ses. Sesler weeech .... weeech .... weeech. Bu weeech, otomobilin hızı artık farkedilmedene kadar arttıkça, sesin süresinde (daha hızlı) değişiyor.
Bu iki sesin mevcut olduğu hızlarda sürerken arabayı boşa alıyorum ve her iki ses de kayboluyor. O zaman duyduğum şey sadece yol gürültüsü.
Herhangi bir öneriniz, bu sorunlara ne sebep olabilir?
[/ALINTI]
lastiklerin yönü yanlış takılmışsa, aynı yönde lastik takılı olup olmadığını kontrol ettirin
 

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2009 E350 Sport (Staggered Wheels) 83k miles , rear wheel drive, NOT 4matic . 722.9 transmission
Transmission serviced 2 years ago ( 15k miles since then) New Michelin tyres AS Sport. Changed tyres as the previous ones became very noisy.
For about a years or so I have been noticing two distinct noises from the car.
The first is a low frequency rumble which is not constant but cyclical and is more pronounced at speed up to 45mph , give or take
Sounds like bluuum....bluuuum.....bluuum. This produces a corresponding mild vibration in the car as well.
The next is a higher frequency swishy sound more noticeable under , say , 50mph . Sounds like weeech ....weeech....weeech. This weeech sounds changes in duration ( faster) as the speed of the car increases till it is no longer noticed.
While I am driving at the speeds that these two sounds are present I put the car in neutral and both sounds disappear. What I hear then is just the road noise .
Any suggestions what maybe causing these issues?
the direction of the tires are installed incorrectly have the same problem I have checked if the directional tire was installed
 

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2009 e350 sport
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Discussion Starter #5
Update:
The rear flex disc is all cracked up. The center bearing is fine. The flex disc is on order and I hope this fixes the rumbling sound/vibration
 

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99 ML430, 00 ML320, 05 E500 4matic Wagon
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If the old one is that rough the new one should take care of the drive line noise.
 
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