Poyce123
Member Since: 26 Jul 2014
Location: Gwynedd
Posts: 43
  
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| Noise on throttle and vibration |
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I've owned my 06 disco HSE auto with 96k and fsh for 2 months now and I've noticed a strange noise when applying slight throttle it's similar to a heat shield rattling noise, when I give it more throttle or let off all together it stops, over the last 2 months it's got slightly worse.
Since last week every now and then there's a very faint vibration in the steering wheel and foot pedals and when driving around the town I can hear a noise as if the brake pads are slightly stuck on but it doesn't feel as if it's being slowed down.
Could these be connected in anyway and any idea what the cause is and any recommendation's for a good Indy near me on the north west coast of wales?
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 8th Sep 2014 7:30 pm |
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TOMDOB
Member Since: 09 Dec 2010
Location: Midlands
Posts: 91
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Hi Poyce
Ours has developed the same noise, not something I've read anthing about !
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| 8th Sep 2014 9:19 pm |
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Disco_Mikey
Member Since: 29 May 2007
Location: Dundee, Scotland
Posts: 20733
 
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My own car has done this for the last 26k miles.
I believe it is due to the way the air is flowing through the turbo vanes, as any change in throttle angle will affect the requested levels of boost... I think  My D3 Build Thread
TDV8 Retrofit Build Thread
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| 8th Sep 2014 10:02 pm |
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blossom
Member Since: 03 Apr 2013
Location: staffordshire
Posts: 49
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I have the same noise on my 2005 model, would be nice to know what it actually is 
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| 8th Sep 2014 10:08 pm |
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Barn1e
D3 Decade
Member Since: 28 Aug 2006
Location: Mid-sussex
Posts: 2021
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mine was a loose connection between the two exhaust sections. Probably not tightened following the TC replacement. 2005, TDV6 S, Auto, 190k miles, owned from new, V8 Brake Upgrade, Nancom Evo, RLD protector, BAS EGR blanking & Remap, separate ATF cooler, changing all the fluids ahead of time.
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| 8th Sep 2014 10:12 pm |
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Scwede
Member Since: 31 Jul 2014
Location: Jönköping, Sweden
Posts: 301
 
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Disco_Mikey wrote:My own car has done this for the last 26k miles.
I believe it is due to the way the air is flowing through the turbo vanes, as any change in throttle angle will affect the requested levels of boost... I think
DM - it definitely appears to be related to the turbo and I suppose if you live with it we should do the same until you figure out what it is 
One thing I would note is that although it can heard when driving based on throttle position (it's quite loud), it is not audible if the engine is revved in neutral.
Cheers
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| 9th Sep 2014 7:11 am |
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stav
Member Since: 14 Nov 2013
Location: Athens
Posts: 178
 
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Hi all, i have the same noise. I think its the torque converter lock/unlock mechanics that create the noise, as you cannot hear a thing when in neutral. When in steep hill the noise is noticable when the converter goes from slipping(unlocked ) to gradually lock itself. Thats my opinion, and if im wrong i would be very happy 
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| 9th Sep 2014 7:15 am |
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anglefire
Member Since: 09 Mar 2010
Location: In the Club House
Posts: 4180
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Stav I had that noise - more pronounced in low range - or at least a different mode to normal (I.e. Mud/ruts etc) Mark.
2006, D3 SE Auto - gone but not forgotten.
2014 BMW 530d M Sport Tourer.
1977 Triumph Spitfire 1500
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Disco Picture Website Here
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| 9th Sep 2014 12:57 pm |
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stav
Member Since: 14 Nov 2013
Location: Athens
Posts: 178
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You HAD??? Now its gone, you mean????
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| 9th Sep 2014 1:01 pm |
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Disco_Mikey
Member Since: 29 May 2007
Location: Dundee, Scotland
Posts: 20733
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stav wrote:Hi all, i have the same noise. I think its the torque converter lock/unlock mechanics that create the noise, as you cannot hear a thing when in neutral. When in steep hill the noise is noticable when the converter goes from slipping(unlocked ) to gradually lock itself. Thats my opinion, and if im wrong i would be very happy
I did consider it to be a torque converter, or gearbox noise, but mine only does it with the TC locked
Though the engine noise may be a bit loud to hear it when the TC is unlocked... My D3 Build Thread
TDV8 Retrofit Build Thread
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| 9th Sep 2014 4:26 pm |
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BETOGTI
Member Since: 15 Jul 2014
Location: Rio de Janeiro
Posts: 28
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I do not think it is turbo related since mine is a V8 and it appears to have the exact same noise described in this post. 
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| 9th Sep 2014 5:42 pm |
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VampireBazz
Member Since: 27 Nov 2013
Location: Leeds, West Yorkshire
Posts: 11
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Mine does this too, but only when I have the lightest of pressure on the throttle. I couldn't find anything loose when I looked underneath her, as I thought it was a heatshield rattle too.
There is a different but (in my opinion) related noise when I first set off in a morning. After leaving the car to completely cool overnight there is a clunk as the revs rise just before the first gear change (from first to second), but then every other gear change after that is perfect. I assume it's a torque converter fault but I'm no expert so I don't know. She's getting a gearbox oil change at the next service and I'm hoping that and a Dr Tranny infusion will cure it.
If not it does sound like a very expensive rattle...
2005 TDV6 HSE Auto, 142,000 miles
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| 10th Sep 2014 1:02 pm |
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stav
Member Since: 14 Nov 2013
Location: Athens
Posts: 178
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Oil change and Dr.Tranny will not cure the sound. What ive noticed though, is that the sound almost disappears, if you are a bit aggresive on the throttle. obviously do not try this in heavy traffic!!!!
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| 10th Sep 2014 1:08 pm |
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