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Has anybody else had this
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joe90t
 


Member Since: 28 Jun 2011
Location: wigan
Posts: 29

United Kingdom 2012 Discovery 4 3.0 SDV6 Commercial Auto Sumatra BlackDiscovery 4
Has anybody else had this

On my D4 MY12 I have experienced the exhaust sounding really "throaty". There is no loss of power it drives as normal. It then stops once I have turned the engine of and restarted. I have covered around 7k and its happened around 6 times. Any advice would be appreciated
  
Post #8687999th Dec 2011 9:49 am
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amazing
 


Member Since: 05 Mar 2011
Location: chengdu
Posts: 1542

China 2011 Discovery 4 3.0 SDV6 HSE Auto Santorini BlackDiscovery 4
deep throat

sure its not the engine fan?
 It is better to have and not need it then need and not have it.  
Post #8688329th Dec 2011 10:46 am
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crews control
 


Member Since: 18 Mar 2007
Location: Dorset
Posts: 5011

United Kingdom 2016 Discovery 4 3.0 SDV6 HSE Lux Auto Waitomo GreyDiscovery 4

Yes - I've heard that a few times... think it sounds rather nice so I've ignored it! Thumbs Up
  
Post #8688529th Dec 2011 11:49 am
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Gareth
Site Moderator 


Member Since: 07 Dec 2004
Location: Bramhall
Posts: 26701

United Kingdom 

Could it be the DPF cleaning cycle?
  
Post #8688559th Dec 2011 12:00 pm
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koen_dr
 


Member Since: 23 Mar 2010
Location: Zoersel
Posts: 39

Belgium 2010 Discovery 4 3.0 TDV6 HSE Auto Ipanema SandDiscovery 4

I noticed the exact same thing over the last weeks and sometimes when you stop and shut down the car it smells really burnt, starts fine 2min later and sounds normal again, indeed no power loss Question
 2015 Discovery SDV6 HSE Fuji White with Black pack
Old:2010 LR4 Discovery 3.0TDV6 HSE Full Spec 
 
Post #88289013th Jan 2012 2:28 pm
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cherokee
 


Member Since: 03 Jul 2007
Location: preston
Posts: 562

2012 Discovery 4 3.0 SDV6 HSE Auto Nara BronzeDiscovery 4

I've noticed that to, could it be the FBH thats what i thought it was, I never got out to check, but will do next time it
does it,it is getting colder and the FBH sounds different to the old D3, more throaty sound.
 Always walk behind a Shooter and
In front of a Sh*ter 
 
Post #88290613th Jan 2012 3:14 pm
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LiftedDisco
 


Member Since: 10 Jun 2010
Location: Towcester
Posts: 997

United Kingdom 2016 Discovery 4 3.0 SDV6 Commercial Auto Barolo BlackDiscovery 4

Yep - strange exhaust note and burnt smell when you get out of the car.

Has happened a few times - normally with a run of about 10 miles or so but can't identify any common ground and don't think that it's FBH related as it is more of an acrid smell...

Will watch this thread with interest!
 D4 Commercial - 65 Plate, 2016MY

D5 Commercial - Handed back when I left that job…
D4 Commercial (2014MY) - gone
D4 Commercial SDV6 - Baltic Blue (also gone)
D1 300TDi... 2" lift, HD bumpers (both), detachable tow hitch, 9,500lb winch, 235/85/16 muds and plenty of other toys (gone to make way for the next toy...)

Smiles per Mile - Tornado Motorsports caged Evo 3... 100" Defender look-alike, with Range Rover running gear - all fully IVA'd and registered! 
 
Post #88299513th Jan 2012 7:10 pm
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Baben
 


Member Since: 15 Feb 2006
Location: Kyalami
Posts: 2059

South Africa 2006 Discovery 3 TDV6 SE Auto Cairns BlueDiscovery 3

DPF burnoff?
  
Post #88300913th Jan 2012 7:58 pm
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euangibson
 


Member Since: 24 Dec 2010
Location: Borders
Posts: 11027

Scotland 2012 Discovery 4 3.0 SDV6 HSE Auto Firenze RedDiscovery 4

LiftedDisco wrote:


Has happened a few times - normally with a run of about 10 miles or so



That would suggest it is indeed he diesel particulates burning off......I'm sure most dpf burn-offs require higher engine temp or at least 40 mph-ish to start the burn-off process.....so if you have had short,slow-speed journeys it may be more noticeable when it happens.....
 "Better to remain silent and be thought a fool,than to speak out and remove all doubt" ?.....what rubbish...

Locking rear E-diff
RLD spare wheel protector & sump guard
Extended roof rails
Series 111 mudflaps
Black side tubes,grill and vents
Timed climate remote
Hids4u interior lights

D4 Firenze my2012 HSE
D3 Java 2005 SE manual (sold,sadly,thanks for the memories)
1966 '88 Series 2a....still starts in the morning better than I do... 
 
Post #88301813th Jan 2012 8:17 pm
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LiftedDisco
 


Member Since: 10 Jun 2010
Location: Towcester
Posts: 997

United Kingdom 2016 Discovery 4 3.0 SDV6 Commercial Auto Barolo BlackDiscovery 4

Erm - certainly not slow!

For instance homee to Milton Keynes station which is high speed A road and dual carriageway all the way or the other time that I have really noted this is the trip home from Brackley which is 10 miles of dual carriageway virtually door to door.

In each instance, I have been giving it some beans (late for train, late for dinner... not sure which is the most critical!) and put it down to simple over-enthusiasm...

Car is now on 25k at 11 months old.
 D4 Commercial - 65 Plate, 2016MY

D5 Commercial - Handed back when I left that job…
D4 Commercial (2014MY) - gone
D4 Commercial SDV6 - Baltic Blue (also gone)
D1 300TDi... 2" lift, HD bumpers (both), detachable tow hitch, 9,500lb winch, 235/85/16 muds and plenty of other toys (gone to make way for the next toy...)

Smiles per Mile - Tornado Motorsports caged Evo 3... 100" Defender look-alike, with Range Rover running gear - all fully IVA'd and registered! 
 
Post #88303513th Jan 2012 8:59 pm
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