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Strange vibration/noise
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lrsteve77
 


Member Since: 21 Mar 2018
Location: West Midlands
Posts: 6

United Kingdom 
Strange vibration/noise

Hi all, just looking for some help with a strange noise and vibration I am getting on my 2009 auto D3. When travelling in 5th gear with tc locked at around 1200-1600rpm there is a strange noise as I release the throttle, the only way I can describe it is like when the exhaust touches the chassis and you get resonance sound. If I just feather the throttle I can sometimes make the noise appear but its always worst as the throttle is released and it is only there for a split second. I can just about hear/feel it in 6th gear but 5th is where it's worse, if I press the throttle harder to increase the torque it disappears and only comes back when I throttle off. I replaced rear prop as centre bearing was in a bad way but that didn't cure it, have checked engine/trans mounts, exhaust mounts etc. Just wondering about front prop ? Other than this noise it drives perfect, very smooth with a lovely gear change, no tc vibrations or rev fluctuating, all drive line fluids replaced. I m sure it's some kind of drive line torque vibration, have any you guys experienced anything similar ?

Thanks for reading my post.
  
Post #220360319th Jan 2021 10:28 am
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rrhool
 


Member Since: 28 Aug 2014
Location: Norfolk
Posts: 4398

United Kingdom 2007 Discovery 3 TDV6 SE Manual Zermatt SilverDiscovery 3

Propshaft centre bearing, the rubber mounting fails. Common issue. Thumbs Up

Edit, just read your post properly! Embarassed
 Richard


D3 SE 2007. Triumph 2.5Pi 1973. Ferguson TEA20 1948.



Discovery 2 4.0 ES 2001- Gone
Discovery 1 300Tdi ES '95 - Gone
Range Rover Classic '79 - Gone 
 
Post #220360519th Jan 2021 10:33 am
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lrsteve77
 


Member Since: 21 Mar 2018
Location: West Midlands
Posts: 6

United Kingdom 

Already been replaced with GKN unit, cheers
  
Post #220361019th Jan 2021 10:53 am
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Leon
 


Member Since: 26 Apr 2014
Location: Leamington Spa
Posts: 424

England 2005 Discovery 3 TDV6 Base 7 Seat Manual Zambezi SilverDiscovery 3

Mine had vibration/ resonance when lifting off the accelerator no noise at all when accelerator down. Unfortunately it was the front diff bearings, excellent company near Sparkbrook in Birmingham took off, referbished it for me and re fitted.
  
Post #220376319th Jan 2021 10:40 pm
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