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Thud when braking sharply
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Naks
 


Member Since: 12 Jul 2010
Location: Stellenbosch, Republic of the Western Cape
Posts: 779

South Africa 2011 Discovery 4 3.0 SDV6 SE Auto Fuji WhiteDiscovery 4
Thud when braking sharply

Hi guys,

Just noticed while crawling in a parking lot that if I stomp on the brake pedal, there is a 'thud' that comes from the front.

It is doing this at all speeds, I also tested it on the open road, street, etc.

It is more noticeable if idling along in D in a car park and I stomp on the brake pedal.

Anyone have any pointers?
 --
2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear
2015 Range Rover Sport V8 Supercharged



Defender Puma Workshop Manual: https://bit.ly/2zZ1en9
Discovery 4 Workshop Manual: http://bit.ly/22l8YHh
Range Rover/Sport L320/L322/L494 Workshop Manual: http://bit.ly/2iH7jgG 
 
Post #15740588th Dec 2015 10:28 am
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Gareth
Site Moderator 


Member Since: 07 Dec 2004
Location: Bramhall
Posts: 26775

United Kingdom 

Front lower wishbones/ball joints.
  
Post #15740598th Dec 2015 10:29 am
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Naks
 


Member Since: 12 Jul 2010
Location: Stellenbosch, Republic of the Western Cape
Posts: 779

South Africa 2011 Discovery 4 3.0 SDV6 SE Auto Fuji WhiteDiscovery 4

Thanks Gareth!

Front lower control arms were just done about a month ago, shouldn't they have picked this up? Or not related?
 --
2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear
2015 Range Rover Sport V8 Supercharged



Defender Puma Workshop Manual: https://bit.ly/2zZ1en9
Discovery 4 Workshop Manual: http://bit.ly/22l8YHh
Range Rover/Sport L320/L322/L494 Workshop Manual: http://bit.ly/2iH7jgG 
 
Post #15740778th Dec 2015 10:53 am
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brightyuk
 


Member Since: 11 Apr 2013
Location: Bedworth
Posts: 394

United Kingdom 2005 Discovery 3 TDV6 HSE Manual Siberian SilverDiscovery 3

Possible ARB bushes?
 Vehicles
2016 D4 Landmark Indus Silver
2005 D3 HSE Silver
Detent Circlip 'How to Guide'


  
Post #15740818th Dec 2015 11:00 am
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Naks
 


Member Since: 12 Jul 2010
Location: Stellenbosch, Republic of the Western Cape
Posts: 779

South Africa 2011 Discovery 4 3.0 SDV6 SE Auto Fuji WhiteDiscovery 4

took it to the stealer this morning and the chief mechanic drove with me, says it's normal.
 --
2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear
2015 Range Rover Sport V8 Supercharged



Defender Puma Workshop Manual: https://bit.ly/2zZ1en9
Discovery 4 Workshop Manual: http://bit.ly/22l8YHh
Range Rover/Sport L320/L322/L494 Workshop Manual: http://bit.ly/2iH7jgG 
 
Post #15746609th Dec 2015 8:04 am
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MarkOne
 


Member Since: 23 Jul 2011
Location: County Antrim
Posts: 3345

Scotland 2014 Discovery 4 3.0 SDV6 HSE Lux Auto Corris GreyDiscovery 4

The so called chief mechanic isn't much of a mechanic then, it's not normal. There is movement somewhere something is worn or loose.
  
Post #15746759th Dec 2015 8:41 am
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Sloss
 


Member Since: 18 Aug 2013
Location: Aberdeenish
Posts: 1691

Scotland 

Yea, change your mechanic..... Thumbs Up
 Stew,

2010 D4 gone but I really loved it
Went back to Merc - C350 AMG 
 
Post #15746799th Dec 2015 8:47 am
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Naks
 


Member Since: 12 Jul 2010
Location: Stellenbosch, Republic of the Western Cape
Posts: 779

South Africa 2011 Discovery 4 3.0 SDV6 SE Auto Fuji WhiteDiscovery 4

unfortunately that is the one from the LR dealer, vehicle is still under service plan.

will go past my indie at some point to confirm.
 --
2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear
2015 Range Rover Sport V8 Supercharged



Defender Puma Workshop Manual: https://bit.ly/2zZ1en9
Discovery 4 Workshop Manual: http://bit.ly/22l8YHh
Range Rover/Sport L320/L322/L494 Workshop Manual: http://bit.ly/2iH7jgG 
 
Post #15746879th Dec 2015 9:00 am
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Gareth
Site Moderator 


Member Since: 07 Dec 2004
Location: Bramhall
Posts: 26775

United Kingdom 

Is it a thud or a clonk? A clonk would be synonymous of worn bushes in the lower wishbone. When you say control arm, do you mean the big black wishbone shaped thing that sits at the bottom of the air spring, and is attached to the chassis by big bolts and bushes?

Obviously there could be a thud on sharp application, but the clonk I am talking about is very noticeable.
  
Post #15746899th Dec 2015 9:08 am
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Naks
 


Member Since: 12 Jul 2010
Location: Stellenbosch, Republic of the Western Cape
Posts: 779

South Africa 2011 Discovery 4 3.0 SDV6 SE Auto Fuji WhiteDiscovery 4

no, it's not a clonk, definitely a thud

to me, it almost feels as if the brakes are biting too hard if I stab the brakes too hard.

the mech told me they all do this, even new ones. Rolling Eyes
 --
2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear
2015 Range Rover Sport V8 Supercharged



Defender Puma Workshop Manual: https://bit.ly/2zZ1en9
Discovery 4 Workshop Manual: http://bit.ly/22l8YHh
Range Rover/Sport L320/L322/L494 Workshop Manual: http://bit.ly/2iH7jgG 
 
Post #15746929th Dec 2015 9:13 am
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