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willswett
Member Since: 26 Dec 2013
Location: Greenville, South Carolina
Posts: 6
  
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| Metallic Grinding/Vibration Downhill |
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Howdy!
I just recently purchased a 2005 LR3 HSE. It's been fantastic minus a few water leaks and electrical gremlins that I've fixed myself. 8)
Tonight, we were out looking at Christmas lights, went down quite a steep hill in a lower gear... heard a pretty decent grinding noise. It went away when I put the gas, nearly went away when the steering wheel was angled right.
So, I'm thinking front diff? I've had the diffs and transfer case oils changed. No shocking amounts of metal in the pan. Oils were very dark... but not burnt.
Would a good place to start be a trans flush? Other thing I could figure would be one of the bearings in the front diff.
What are you guys' thoughts?
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 26th Dec 2013 3:59 am |
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anglefire
Member Since: 09 Mar 2010
Location: In the Club House
Posts: 4180
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Did you have hdc on? If you did there will be a green light in the dash of a car going down hill.
If so then the noise is normal. Mark.
2006, D3 SE Auto - gone but not forgotten.
2014 BMW 530d M Sport Tourer.
1977 Triumph Spitfire 1500
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| 26th Dec 2013 7:54 am |
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nighthawk
Member Since: 24 Jul 2010
Location: Malta
Posts: 1163
  
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My money is on HDC/DSC/ABS too. 
If you never heard the noise before I HIGHLY doubt it would be the diff bearings. They usually degenerate progressively over many hundreds of miles before they reach the metal grinding stage.
Wheel bearings, on the other hand, are known to fail suddenly sometimes but if it was a one off noise (no more noises on the way home?) then not the issue. Dennis
2006 Discovery 3 TDV6 Commercial Manual Buckingham Blue
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| 26th Dec 2013 8:18 am |
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DavidSally
Member Since: 31 Oct 2012
Location: Chesterfield
Posts: 565
 
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+1 for HDC
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| 26th Dec 2013 11:04 am |
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Gareth
Site Moderator
Member Since: 07 Dec 2004
Location: Bramhall
Posts: 26754
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The big yellow HDC button is in just the right place for wifeys handbag to rest on! you would not be the first.
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| 26th Dec 2013 11:08 am |
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dingdongs
Member Since: 30 May 2012
Location: St. Lawrence Bay Essex
Posts: 186
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prop centre bearing may be the culprit too.
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| 26th Dec 2013 12:01 pm |
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M3DPO
Member Since: 22 Sep 2010
Location: Notts.
Posts: 8166
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Sure you aren't in Mud & Snow setting?- this operates the abs system on autos when you take your foot of the accelerator or are going downhill, similar to the hill decent control. It can when others can't,
It will when others won't,
It goes where others don't.
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| 26th Dec 2013 12:16 pm |
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willswett
Member Since: 26 Dec 2013
Location: Greenville, South Carolina
Posts: 6
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Ya know, I hadn't thought about hdc/abs. But, I've heard that and it rly doesn't sound like either of those.
I hear a light grinding noise when accelerating when the steering wheel is over to the left side. I'll also experience some driveline backlash in the form of a pop when it up shifts. Seems more like the problem I had last night than abs?
Thanks much for your help! The Rover community is a great place to be a part of, I have to say.
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| 26th Dec 2013 4:54 pm |
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Gareth
Site Moderator
Member Since: 07 Dec 2004
Location: Bramhall
Posts: 26754
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In that case, I would say check the wheel bearing asap. Jack up each corner, and feel for 12 oclock - 6 oclock movement.
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| 26th Dec 2013 8:02 pm |
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