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Strange Noise - Help Please!!
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Riccarton Disco
 


Member Since: 24 Jan 2013
Location: Scottish Borders
Posts: 565

Scotland 2005 Discovery 3 TDV6 HSE Auto Bonatti GreyDiscovery 3
Strange Noise - Help Please!!

Dear chaps and chapesses - my 55 plate TDV6 Disco HSE Auto has a strange noise and it's driving me a little bit insane!!!
The only way I can describe it is similar to a noisy clutch release bearing but......
a) It's an auto.
b) It only does it under light driving throttle! Not under heavy load and not under light load or overun - always when just maintaining speed.
c) It is not road speed related - doesn't matter how fast you're going.
d) It is difficult to hear with the windows up - wifey can't hear it anytime but I've tuned into it!!!!!
I'm wondering if it could be turbo / wastegate related or fuel pump????

With such a useless description does anyone have any idea what on earth I'm hearing?????
  
Post #205350415th May 2019 8:58 pm
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Lee Trinder
 


Member Since: 12 Aug 2018
Location: Henley in arden
Posts: 515

2007 Discovery 3 TDV6 HSE Auto Stornoway GreyDiscovery 3

Hi, I have the exact same noise on mine, which is an auto, and thought like you. I’ve read a few threads on here that say the noise comes from the torque converter. Google discovery 3 torque converter noise and see if that sounds like you. Sounds like something is rattling when there is no particular load but stops when you lift off. Regards Lee.
  
Post #205351315th May 2019 9:26 pm
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Riccarton Disco
 


Member Since: 24 Jan 2013
Location: Scottish Borders
Posts: 565

Scotland 2005 Discovery 3 TDV6 HSE Auto Bonatti GreyDiscovery 3

Thanks Lee.

Mine isn't as mechanical as that and doesn't fit the other criteria (Park / Neutral) either.
When I say "like a noisy release bearing" I mean when it's at that stage before it squeals or rattles. To give another idea of the sound think very very quiet supercharger Laughing Laughing Oh god, I'm getting lost in this now!!! I've tried recording it but it can't be heard - it's too subtle!

Guess I'll just have to wait and see what drops off Whistle Laughing Laughing Laughing
  
Post #205362116th May 2019 1:50 pm
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Dazz360
 


Member Since: 03 Sep 2016
Location: West Mids Walsall
Posts: 871

United Kingdom 2005 Discovery 3 TDV6 HSE Auto Bonatti GreyDiscovery 3

Does it do it when stationary in neutral or driving ?
 Metal auto sump & fluid change (3 hrs)
LR door puddle projectors (10 mins)
Tinted Bonnet wind deflector (10 mins)
All Intercooler pipes and Tbolts (2hrs)
3 injectors replaced so far (30mins)
Sunroof drain pipes both sides 2.5 hrs)
Rear discs, shoes,pads,callipers,flexi hoses, rigid brake line, n/s upper hub carrier bush and rear n/s upper arm (13hrs over 2 days) 
 
Post #205366616th May 2019 3:58 pm
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Lee Trinder
 


Member Since: 12 Aug 2018
Location: Henley in arden
Posts: 515

2007 Discovery 3 TDV6 HSE Auto Stornoway GreyDiscovery 3

Yours does sound exactly like my noise. The it’s done it since we bought it and only really noticed it when driving through the welsh mountains due to loss of radio. Anybody’s input welcome.
  
Post #205370816th May 2019 6:36 pm
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Riccarton Disco
 


Member Since: 24 Jan 2013
Location: Scottish Borders
Posts: 565

Scotland 2005 Discovery 3 TDV6 HSE Auto Bonatti GreyDiscovery 3

Dazz360 - No - or at least I can't seem to replicate it!! It needs a few revs on (1.5 - 2k) and a very light load but still some load - doesn't do it downhill for example.

Have to say, after Lee's suggestion I've been pleasantly suprised at just how quiet the car in on tick-over in any gear!!!! It really does sound incredibly sweet Thumbs Up Thumbs Up
  
Post #205376516th May 2019 8:54 pm
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Globetrotter448
 


Member Since: 21 Mar 2017
Location: Londonderry NSW
Posts: 1771

Australia 2007 Discovery 3 4.0 V6 Petrol SE Auto Java BlackDiscovery 3

Check the park brake mechanism that make some funny noises when out of adjustment
  
Post #205379617th May 2019 4:14 am
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