Swanny
Member Since: 08 May 2014
Location: Sidcup
Posts: 4
  
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Hi All,
My '09 Discovery has developed a noise that sounds like a dynamo or whining noise. The noise ramps up and down dependant on speed. I've think I've ruled out any gearbox issues by dropping the clutch whilst in motion but hearing no change in the noise. I've been to the local garage and had the discs and pads done as they were due, but this has not affected the noise at all.
Any thoughts?
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 8th May 2014 3:11 pm |
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maplecottage
Member Since: 01 Feb 2011
Location: Norfolk
Posts: 3171
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Spooky - sounds not dissimilar to a noise that I became aware of at the weekend. Only faint but turn the radio off and it's definitely there. Most prominent at around 30 - 40 mph, mine is an Auto box.
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| 8th May 2014 3:16 pm |
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LT
Member Since: 31 Dec 2005
Location: South West
Posts: 23337
 
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What tyres are you running?
There have been a few posts about excessive tyre noise recently. Here's a couple that might be relevant:
http://www.disco3.co.uk/forum/topic110204.html
http://www.disco3.co.uk/forum/topic109988.html
Wheel bearings on the D3/4 do make some weird and wonderful noises though. Quite unlike any other car/vehicle that I've owned.
Jack it up (securely) and see if there's any side to side movement on each wheel. 2006 D3 HSE (Original & still the best)-GONE
2010 D4 HSE (A bit bling)-GONE
2014 D4 HSE (Almost too bling)-GONE
2015 D4 HSE (A heated what?)-GONE
2016 D4 Landmark (Written Off)-GONE
2016 D4 Landmark (Surely the last!) PD1881 rims-GONE
2017 FFRR SDV8 Autobiography
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| 8th May 2014 3:24 pm |
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Swanny
Member Since: 08 May 2014
Location: Sidcup
Posts: 4
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Thanks for the replies. I'll need to check tyre type when I get home. She drives and feels perfect. It seems to be from the back. Anything else to consider?
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| 8th May 2014 3:33 pm |
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nighthawk
Member Since: 24 Jul 2010
Location: Malta
Posts: 1163
 
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I also get a bit of a howl from the rear above certain speeds. I recently replaced my front wheel bearings (they were VERY noisy). I am suspecting that the slight howl from the rear is the beginning of the end of the rear wheel bearings 
Hopefully it's just that not the rear diff 
PS. I'm running General AT tyres so it could be those too.....though I'd expect to hear the howl from all round if it was tyres... not just from the rear. Dennis
2006 Discovery 3 TDV6 Commercial Manual Buckingham Blue
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| 8th May 2014 3:36 pm |
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L319
Member Since: 14 Dec 2013
Location: Herefordshire
Posts: 2080
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Had same sort of noise, I thought rear wheel bearing or diff, was on the way out. Turned out to be rear wheel alignment out causing uneven tyre wear which created the noise. New tyres and alignment cured the noise.
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| 8th May 2014 4:54 pm |
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nighthawk
Member Since: 24 Jul 2010
Location: Malta
Posts: 1163
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Well, I'm on new tyres and just been aligned a week ago
Might just be tyre noise though (AT pattern).... will wait and see if it gets worse Dennis
2006 Discovery 3 TDV6 Commercial Manual Buckingham Blue
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| 8th May 2014 4:58 pm |
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Swanny
Member Since: 08 May 2014
Location: Sidcup
Posts: 4
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Hi all,
Just got back from the main dealer, diagnosis is a front left wheel bearing. They want £330 to put that right. Also mentioned the back left compressor was noisy for 10 seconds on start up, not a problem or unsafe but I should consider replacing it for £750.
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| 10th May 2014 10:08 am |
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maplecottage
Member Since: 01 Feb 2011
Location: Norfolk
Posts: 3171
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I've decided that mine is engine revs related. Most noticeable at around 1500 - 2000 low speeds.
Can't hear it with radio on
Steve
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| 10th May 2014 10:59 am |
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Swanny
Member Since: 08 May 2014
Location: Sidcup
Posts: 4
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I called the dealership yesterday, they said bring it down and take a service guy out for a run so he can have a listen. No charge, he even stretched to lifting it up and having a look underneath. Might be worth a call before it develops into a more expensive problem.
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| 10th May 2014 11:12 am |
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ebygum32
Member Since: 03 Oct 2010
Location: yorkshire - London
Posts: 1590
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£330 to replace front wheel bearing
Get a timken bearing for £100 then fit it yourself save yourself a couple hundred quid, or if ya stuck give Geoff a shout on here. Max one hour to fit it. Goodyear Duratracs
Pirelli ATR gone
GG AT Gone
RLD Spare wheel protector
Leeds - London weekly return
Club ctek mxs10
Yorkshire 4x4 Response
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| 10th May 2014 7:44 pm |
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sean 471
Member Since: 26 Apr 2011
Location: Sheffield
Posts: 2990
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As ebygum says get a timken and if not happy with doing it yourself get Geoff to fit it a good guy to deal with.
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| 10th May 2014 9:38 pm |
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GyroMike
Member Since: 30 Jan 2018
Location: Victoria
Posts: 5
 
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LT wrote:What tyres are you running?
There have been a few posts about excessive tyre noise recently. Here's a couple that might be relevant:
http://www.disco3.co.uk/forum/topic110204.html
http://www.disco3.co.uk/forum/topic109988.html
Wheel bearings on the D3/4 do make some weird and wonderful noises though. Quite unlike any other car/vehicle that I've owned.
Jack it up (securely) and see if there's any side to side movement on each wheel.
I was advised of possible wheel bearing noise (or front diff bearing).. its like a steel on steel scraping noise in a right hand turn.. Got the car up and can't find any wheel movement out of rotation plane (left front) so about to check right front..
Questions:
Is that check sufficient to clear wheel bearings..?
What does a failing front diff bearing sound like..? Thanks to all..
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| 30th Jan 2018 5:26 am |
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daftlad
Member Since: 12 Jun 2016
Location: Worksop , Nottinghamshire
Posts: 712
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When my front right went its was a slight squeal so I knew it was on its way , in Cornwall at the time .
By the time the holiday was over and home it was proper grumbling
when I did the replacement I bought Timken for about £90 and did it in about an hour and half .
but I had no play in the wheel when jacked up but the old bearing was red with rust dust .
easy job , I would have done whilst away if I knew how easy
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| 30th Jan 2018 8:28 am |
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daftlad
Member Since: 12 Jun 2016
Location: Worksop , Nottinghamshire
Posts: 712
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Swanny wrote:Hi all,
Just got back from the main dealer, diagnosis is a front left wheel bearing. They want £330 to put that right. Also mentioned the back left compressor was noisy for 10 seconds on start up, not a problem or unsafe but I should consider replacing it for £750.
the comp noise is normal it can run longer than 10 seconds if parked on un-level ground I wouldn't replace it, they are not silent my old D2 comps where quitter than my newish AMK comp on the D3
don't worry , but the wheel bearing quote is a bit stiff , 2 hours labour max and that's being generous
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| 30th Jan 2018 8:33 am |
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