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DISCO3.CO.UK > Faults & Fixes (D3)

[Mechanical] [Solved] Roaring Noise from Cold
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DesertRat
 


Member Since: 17 Nov 2006
Location: Herts
Posts: 49

United Kingdom 2006 Discovery 3 TDV6 HSE Auto Zermatt SilverDiscovery 3

Agree with Zebadee, back off the throttle and let the vehicle pull off at low revs for 1/2 mile and roar disappears. Very Happy
  
Post #53260910th Oct 2009 9:09 pm
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Iain G
 


Member Since: 31 Jan 2009
Location: Filey
Posts: 430

United Kingdom 2005 Discovery 3 TDV6 GS Manual Santorini BlackDiscovery 3

Never mind how to stop the noise, I want to know how to make it continuos Very Happy
I think it sounds good - a bit like going through that 'bean can' exhaust phase when you just passed your test Whistle
  
Post #53262510th Oct 2009 9:26 pm
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Reggieb
 


Member Since: 13 Sep 2007
Location: Watford, Herts.
Posts: 707

United Kingdom 2005 Discovery 3 TDV6 HSE Auto Zambezi SilverDiscovery 3

I love the noise, sounds like a big V8.. Exclamation but it vanishes within 30 seconds.. Big Cry
 TDV6 HSE - Light Guards - White Reflective Sticker
Club--Engel
Club--Satnav on the move (Thanks Pete)
Club--Kumho KL71 (265/70 17) they kick!
Club--Three Musketeers
Club--GNVP Sump Guard (The nuts)
Disco3Club
Never take life seriously. Nobody gets out alive anyway. 
 
Post #53267610th Oct 2009 11:02 pm
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mattyla
 


Member Since: 15 Jul 2009
Location: NW
Posts: 20

United Kingdom 2009 Discovery 3 TDV6 GS Auto Santorini BlackDiscovery 3

mine sounds the same when started from cold....I had always put the noise down to the fan
  
Post #57075428th Dec 2009 9:10 am
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purpledogsailing
 


Member Since: 24 Apr 2010
Location: dorset
Posts: 1

United Kingdom 2008 Discovery 3 TDV6 SE Manual Zermatt SilverDiscovery 3

mine started off with a roar from cold but now roars intermittently but constantly thru the gears,can cause this to happen by changing down hard.Believe me this is not something you would want to hear all the time.
Landrover have said that this is caused by the injector pump which has been replaced but no improvement found.
  
Post #64073924th Apr 2010 11:52 pm
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Reggieb
 


Member Since: 13 Sep 2007
Location: Watford, Herts.
Posts: 707

United Kingdom 2005 Discovery 3 TDV6 HSE Auto Zambezi SilverDiscovery 3

More likely to be the viscose coupling on the fan IMHO
 TDV6 HSE - Light Guards - White Reflective Sticker
Club--Engel
Club--Satnav on the move (Thanks Pete)
Club--Kumho KL71 (265/70 17) they kick!
Club--Three Musketeers
Club--GNVP Sump Guard (The nuts)
Disco3Club
Never take life seriously. Nobody gets out alive anyway. 
 
Post #64074225th Apr 2010 12:12 am
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billy56
 


Member Since: 23 May 2008
Location: Larne
Posts: 74

Northern Ireland 2007 Discovery 3 TDV6 XS Auto Rimini RedDiscovery 3

This is a old one!! but having driven V8,s and the odd V12 mine has never sounded like
anything like an engine Surprised
  
Post #64074525th Apr 2010 12:34 am
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mikeknowle
 


Member Since: 04 Jun 2009
Location: Solihull
Posts: 8

United Kingdom 2007 Discovery 3 TDV6 HSE Auto Zermatt SilverDiscovery 3

I love my morning roar.
Viscous coupling or otherwise.
Please leave my roar alone.

It's the first big smile of my day Very Happy

How to make it roar all day long?
 D3 HSE...120k and climbing.
----------------------------------------------------
My other car is a K1600GT, look it up if you have to... 
 
Post #6462147th May 2010 11:08 pm
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marsie
 


Member Since: 28 Feb 2010
Location: Sheffieldish
Posts: 1267

England 2006 Discovery 3 TDV6 Metropolis LE Auto Java BlackDiscovery 3

it may sound good but it plays havoc with the fuel economy,my old rangerover viscous coupling failed and stuck in and it cost me an extra 5mpg Shocked not good when i was only getting 12 to start with Mr. Green
Paul Neutral
 Current fleet
2006 D3 Metropolis LE
2010 D4 XS-mods unto now,Remote FBH,4x4 info-timed climate,265/60/18 yokohama AT/s, Compomotive PD1881s*gone*
2016 Mini cooper Jcw 5 door
2008 Hilux Invincible 3.0D4d 
 
Post #6563913rd Jun 2010 8:48 pm
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jamesbond007
 


Member Since: 26 Jan 2010
Location: Algarve, Portugal
Posts: 263

Portugal 2006 Discovery 3 TDV6 SE Auto Tonga GreenDiscovery 3

Difficult to talk about fuel economy with a D3... Big Cry
I love that roaring noise too when cold (all relative here... Cool . Had it with the Defender when hot. Rolling Eyes
 The older I get, the better I was.

Discovery 3 TDV6 Auto (BAS remap) after Defender TD4 110 Crew Cab and 1964 SIIA 88. 
 
Post #6581018th Jun 2010 3:29 pm
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lordwinslow
 


Member Since: 28 May 2008
Location: Londonderry, NH
Posts: 7

United States 2005 LR3 4.4 V8 SE Auto Zambezi SilverLR3

I love the roar too, nice throaty low sound. Proper for a vehicle like the LR (Discovery) 3.

Winslow
 ---
1996 LR Discovery SD
2005 LR LR3 SE V8 
 
Post #67042110th Jul 2010 4:57 pm
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DG
Site Moderator 


Member Since: 12 Dec 2005
Location: The Gaff
Posts: 43194

United Kingdom 2015 Discovery 4 3.0 SDV6 HSE Auto Fuji WhiteDiscovery 4

It is not a viscous fan...it's an electronically controlled fan with a clutch controlled by a PWM signal dependent upon various engine temperature readings Thumbs Up
  
Post #67042710th Jul 2010 6:00 pm
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wslr
 


Member Since: 21 Feb 2010
Location: Somerset/Devon
Posts: 39


To quote from the bible:

Quote:
The viscous fan unit is electronically controlled by the
ECM to optimise fan speed for all operating conditions.
NOTE: If the electrical connections to the viscous fan
are disconnected the fan will 'idle' and overheating may
result. The ECM stores the appropriate fault codes in
this case
.


Clever, eh? Except when it stops working properly...

Maybe a powertrain software update could reduce roar?
  
Post #67045510th Jul 2010 8:12 pm
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PaulP
 


Member Since: 04 May 2007
Location: Barcelona
Posts: 4317

Spain 2006 Discovery 3 TDV6 SE Auto Buckingham BlueDiscovery 3

DG wrote:
...it's an electronically controlled fan with an electro-viscous clutch controlled by a PWM signal dependent upon various engine temperature readings Thumbs Up

Thumbs Up Thumbs Up

ISTR that it is also controlled by various other loading requirements such as the air con compressor state and other bits and bobs Thumbs Up
 2006 Discovery 3 TDV6 SE Auto Buckingham Blue
2007 Golf GT DSG 
 
Post #67045810th Jul 2010 8:17 pm
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DG
Site Moderator 


Member Since: 12 Dec 2005
Location: The Gaff
Posts: 43194

United Kingdom 2015 Discovery 4 3.0 SDV6 HSE Auto Fuji WhiteDiscovery 4

Thumbs Up I meant that it's not a conventional viscous unit Smile
  
Post #67046010th Jul 2010 8:22 pm
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