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humming or whirring noise when accelerating
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thomasz
 


Member Since: 01 Oct 2021
Location: Kulmbach
Posts: 107

Germany 2010 Discovery 4 TDV6 SE Manual Nara BronzeDiscovery 4
humming or whirring noise when accelerating

Hi!

D4, 2.7L, manual gearbox, MY 2010

Have a humming or whirring noise when accelerating.
I can easily feel that on the steering wheel.

Ideas where to start looking?

Thomas
  
Post #22606756th Nov 2021 4:04 pm
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M3DPO
 


Member Since: 22 Sep 2010
Location: Notts.
Posts: 8042

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

Could be any number of things, most common wheel bearing(s), cv joint, front diff.
 It can when others can't,
It will when others won't,
It goes where others don't. 
 
Post #22606906th Nov 2021 6:34 pm
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thomasz
 


Member Since: 01 Oct 2021
Location: Kulmbach
Posts: 107

Germany 2010 Discovery 4 TDV6 SE Manual Nara BronzeDiscovery 4

Can I check the parts when they are installed, or do I have to start replacing them until the noise is gone?
Start with the cheapest -> bearings then shafts and hope not the differential?
  
Post #22607287th Nov 2021 7:09 am
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M3DPO
 


Member Since: 22 Sep 2010
Location: Notts.
Posts: 8042

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

I would drain the oil out of the front diff and check it for metal fragments first, if there are any present that could be your problem, refill with new correct grade oil.
Jack front wheels up and turn them by hand feel for any uneven resistance or vertical play in them, a worn wheel bearing can be very difficult tell which one is faulty, they are usually worse when cornering not accelerating.
 It can when others can't,
It will when others won't,
It goes where others don't. 
 
Post #22607497th Nov 2021 9:24 am
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thomasz
 


Member Since: 01 Oct 2021
Location: Kulmbach
Posts: 107

Germany 2010 Discovery 4 TDV6 SE Manual Nara BronzeDiscovery 4

I have changed all oils except engine oil some days ago.
I did not find anything worrying in the oils, not even in the oil from front diff.

It is difficult to turn the front wheels because you move the entire drive with them.

Maybe wait until it gets worse or start with the bearings. Rolling Eyes
  
Post #22607977th Nov 2021 5:38 pm
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thomasz
 


Member Since: 01 Oct 2021
Location: Kulmbach
Posts: 107

Germany 2010 Discovery 4 TDV6 SE Manual Nara BronzeDiscovery 4

Last week, there was additional a louder humming.
Chassis Ear say: Diff front.

Okay - we renew the front diff, the front drive shafts left an right an both wheel bearing on front axle.
Louder humming is gone - perfect.

But the vibration on accelerate is still there. Confused

You can feel it on the floor, pedals an steering wheel.
Vibes are only on acceleration..... not to much, but anoying.....

Any ideas?
  
Post #226470730th Nov 2021 8:54 am
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eightfoot
 


Member Since: 12 Apr 2015
Location: sunny essex
Posts: 760

United Kingdom 2005 Discovery 3 TDV6 S Auto Bonatti GreyDiscovery 3

whats the condition of your front arm rear bushes as i had a very similar thing also with occasional brake /steering wheel wobbles turned out to be the lower arm rear bushes shot
 please excuse any grammer/punctuation mistakes,i'm thick,thankyou
current vehicles 2005 d3 2013 d4 
 
Post #226472130th Nov 2021 9:38 am
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grzesiul
 


Member Since: 11 May 2008
Location: UK
Posts: 6265

Poland 2016 Discovery 4 3.0 SDV6 SE Auto Loire BlueDiscovery 4

thomasz -- vibration on acceleration is also very prominent sign of badly worn front tires or uneven wear of them

had that with present bus new tires fixed it
good luck solving issues
G
  
Post #226472430th Nov 2021 9:40 am
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thomasz
 


Member Since: 01 Oct 2021
Location: Kulmbach
Posts: 107

Germany 2010 Discovery 4 TDV6 SE Manual Nara BronzeDiscovery 4

Alle the arms/bushes on front axles are new.
  
Post #226472630th Nov 2021 9:40 am
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thomasz
 


Member Since: 01 Oct 2021
Location: Kulmbach
Posts: 107

Germany 2010 Discovery 4 TDV6 SE Manual Nara BronzeDiscovery 4

There are new winter-tires on the car..... Nokian WR SUV 4
  
Post #226472730th Nov 2021 9:45 am
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M3DPO
 


Member Since: 22 Sep 2010
Location: Notts.
Posts: 8042

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

Front prop shaft centre bearing?
 It can when others can't,
It will when others won't,
It goes where others don't. 
 
Post #226472930th Nov 2021 9:48 am
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thomasz
 


Member Since: 01 Oct 2021
Location: Kulmbach
Posts: 107

Germany 2010 Discovery 4 TDV6 SE Manual Nara BronzeDiscovery 4

Center bearing FRONT propshaft?
  
Post #226473030th Nov 2021 9:49 am
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M3DPO
 


Member Since: 22 Sep 2010
Location: Notts.
Posts: 8042

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

Front prop shaft and rear Center prop shaft Center bearing.
 It can when others can't,
It will when others won't,
It goes where others don't. 
 
Post #226473630th Nov 2021 9:59 am
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thomasz
 


Member Since: 01 Oct 2021
Location: Kulmbach
Posts: 107

Germany 2010 Discovery 4 TDV6 SE Manual Nara BronzeDiscovery 4

ahh okay Very Happy
will check it
  
Post #226474130th Nov 2021 10:12 am
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barbelist
 


Member Since: 21 Dec 2015
Location: Leeds
Posts: 13

United Kingdom 2010 Discovery 4 3.0 TDV6 HSE Auto Galway GreenDiscovery 4

thomasz wrote:
There are new winter-tires on the car..... Nokian WR SUV 4


That’ll be it surely?
  
Post #22657746th Dec 2021 6:20 pm
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