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mordueman
Member Since: 07 Jan 2011
Location: Newcastle upon tyne
Posts: 48
 
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| 50 MPH wobble when braking |
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I have an annoying wobble through the brake pedal when I brake at 50 MPH.
If I brake at a higher speed the car doesn't wobble at 50, it only seems to happen at exactly 50 MPH, any ideas ? Helping ugly people have sex since 1995 !
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 Wed Dec 21 2011 11:25pm |
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Stu
Member Since: 08 Feb 2009
Location: Hampshire
Posts: 2363
 
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Drive at 70  D3 HSE MY05 Auto
Expo Rack, Club MTR, LR Spots, A Bar, Light Guards, GNVP Sump Guard, GNVP Ladder, Cup Holders, RLD A Bar brackets. Disco3Club stickers, Aux power on Mod
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| Thu Dec 22 2011 1:50am |
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rosettaquarrier
Member Since: 14 Apr 2011
Location: Park City, Utah
Posts: 185
  
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I'll be interested to find out the replies, same happen to me. My first thought was bushes... '07 LR3 V8 SE
'80 109 Stage 1 V8
'85 110 County V8 (left in Oz)
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| Thu Dec 22 2011 2:46am |
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al cope
Member Since: 08 Nov 2005
Location: Oldbury, WM
Posts: 5074
 
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have you had new front discs fitted recently?
could be disc run out if you have? From 70, you are braking harder, so wobble not so noticeable.
Al TDV6 XS Auto - Lugano Teal with Almond Leather, 20" Stormers, Shiny Tailpipes, DVD/TV, BAS Electrickery - and obligatory D3 sticker
Old - TDV6 S - Tonga with Ebony, 20" Stormers, satnav & DVD
If you think you are too small to make a difference - you've never shared a bedroom with a mosquito
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| Thu Dec 22 2011 10:20am |
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bigdave
Site Sponsor
Member Since: 04 Jul 2008
Location: coventry
Posts: 3105
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I had something similar last year.
Turned out to be the ball joints.
I had the whole front wishbones changed and it seemed like a new car.
Dave
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| Thu Dec 22 2011 10:22am |
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mordueman
Member Since: 07 Jan 2011
Location: Newcastle upon tyne
Posts: 48
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al cope wrote:have you had new front discs fitted recently?
could be disc run out if you have? From 70, you are braking harder, so wobble not so noticeable.
Al
Yes had new discs and pads all round, what is disc run out, sorry for my ignorance and can it be fixed ? Helping ugly people have sex since 1995 !
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| Thu Dec 22 2011 1:03pm |
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Bodsy
Site Sponsor
Member Since: 06 Nov 2006
Location: In the clubhouse.
Posts: 15641
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Could be run out or simply that the wheels were not tightened up in 'opposite' sequence. There was another thread that had more technical detail from CG on the 'warped' disk phenomenon.
Basically if you tightent the wheel nuts a la 'quickfit' style i.e. you go round in a circle tightening nuts 1 to 5 in order, then it may not always sit on the hub properly.
If you tighten the wheel nuts in the correct order i.e. opposite nuts so 1, 3, 5, 2, 4 then it is proven to put the wheel more square on the hub. thus eliminating this wobble. How To ? - Change your Brake Disks Pads Shoes Sensors August 2011 NEW V1.6a
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| Thu Dec 22 2011 1:25pm |
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LT
Member Since: 31 Dec 2005
Location: South West
Posts: 2320
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I had a "wobble" through the steering wheel at 50-55mph (no other speeds) when my ball joints and bushes were worn. I knew it wasn't the alignement or wheel balance.
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| Thu Dec 22 2011 1:45pm |
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dr_neil
Member Since: 18 Jun 2009
Location: Devon
Posts: 112
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Had the same issue. I ignored it for a while and it got worse, but I never realised this until I had the bushes done - just had Super Pro ones fitted and the D3 has never been so good. It had also developed a clonk when braking and accelerating and a lack of firmness when cornering. D3 HSE
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| Thu Dec 22 2011 2:34pm |
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al cope
Member Since: 08 Nov 2005
Location: Oldbury, WM
Posts: 5074
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if this has only started since having the discs changed, its more likely to be that. Who did them, and what brand of discs were used? I tried britpart discs on my old D3 and suffered with this. Swapped for genuine and problem went away.
Al TDV6 XS Auto - Lugano Teal with Almond Leather, 20" Stormers, Shiny Tailpipes, DVD/TV, BAS Electrickery - and obligatory D3 sticker
Old - TDV6 S - Tonga with Ebony, 20" Stormers, satnav & DVD
If you think you are too small to make a difference - you've never shared a bedroom with a mosquito
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| Thu Dec 22 2011 6:13pm |
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Leesbay
Member Since: 20 Dec 2011
Location: in the NW
Posts: 222
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More than likely brake discs Remember that silence is sometimes the best answer
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| Thu Dec 22 2011 6:19pm |
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tlt
Member Since: 02 Sep 2006
Location: Austin, TX
Posts: 209
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dr_neil wrote:Had the same issue. I ignored it for a while and it got worse, but I never realised this until I had the bushes done - just had Super Pro ones fitted and the D3 has never been so good. It had also developed a clonk when braking and accelerating and a lack of firmness when cornering.
Do you happen to have any part numbers for the "super pro" ones.
Cheers
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| Wed Jan 04 2012 3:08am |
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Dazza
Member Since: 01 Oct 2007
Location: North Kent
Posts: 27
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What is "disc run out"?
I have just had my pads and discs changed and I am getting a slight wobble when braking.
Dazza
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| Sat Jan 21 2012 6:17am |
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al cope
Member Since: 08 Nov 2005
Location: Oldbury, WM
Posts: 5074
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its when the discs aren't running true and fully inline with the hub face (imagine a wheel thats not tighten up properly). Some of the non-genuine discs may not have been manufactured to the same tolerences as OEM discs.
The effect is that when you gently press the brake pedal, as the pads touch the disc, the disc pushes the pads back and forth (as it isnt running central, smack bang in the middle of the pad gap), so you get the wobble you can feel through the steering wheel. If you brake hard, the pads push (hold) the disc centrally, so the wobble goes away.
does that make sense.
Al TDV6 XS Auto - Lugano Teal with Almond Leather, 20" Stormers, Shiny Tailpipes, DVD/TV, BAS Electrickery - and obligatory D3 sticker
Old - TDV6 S - Tonga with Ebony, 20" Stormers, satnav & DVD
If you think you are too small to make a difference - you've never shared a bedroom with a mosquito
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| Sat Jan 21 2012 9:21am |
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