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Home > Maintenance & Mods (L322) > Whine/drone when slowing to a stop - any ideas?

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WB

Member Since: 26 May 2016
Location: London
Posts: 303

2010 Range Rover Autobiography 5.0 SC V8 Santorini Black

Whine/drone when slowing to a stop - any ideas?

I'm hearing a feint whine/low drone which happens when slowing down but usually just before coming to a stop.

I initially thought it could be a light brake pad squeal however the sound continues after the car is at a standstill.

The sound is intermittent both when it occurs and how long it lasts when it does occur.

It sounds a bit like a bearing noise but I don't think it's engine speed related as it doesn't vary if I rev the engine.

I've listened around the engine bay but can't seem to hear it there.

It's not the sat/nav or dash fans as those I can hear distinctly.

It also occurs whether the air con is on or not and seems more audible when the windows are closed than when open.

Any thoughts on what it could be would be much appreciated.

5th Sep 2019 6:12pm

Joe90

Member Since: 29 Apr 2010
Location: Hampshire
Posts: 6409

and it is not coming from the passenger seat ? .
Experience is the only genuine knowledge, but as time passes, I have forgotten more than I can remember
Volvo V70 P2 2006 2.4 Petrol 170bhp Estate SE
MG Midget Mk1 1962

Previous: L322 Range Rover TDV8 3.6 2008; L322 Range Rover TD6 3.0 2002; P38A Range Rover V8 1999

5th Sep 2019 8:29pm

Highroller

Member Since: 18 Jul 2016
Location: Hampshire
Posts: 565

2005 Range Rover Vogue SE 4.4 V8 Java Black

It's one of those eliminating jobs I'm afraid. You just need to switch things on / off in a sequence, stationary / moving to find it.
Sounds like it's nothing rotating with the engine, as no increase with engine speed.
Good luck

5th Sep 2019 8:43pm

WB

Member Since: 26 May 2016
Location: London
Posts: 303

Joe90 wrote:
and it is not coming from the passenger seat ?

Ha, the passenger seat whine self cured by moving out - long drives are much improved since.

My current suspicion is the slowing to a stop whine is possibly coming from the gearbox or possibly diffs or transfer case? I was able to get the noise to stop and start by moving the shifter from D to P to D. I also think I can 'feel' the whine on the gear shifter.

I was planning to replace the gearbox filter, transfer case and front and rear diff oils anyway so I'm hoping that either cures it or uncovers what may be the cause. Will also do the mechatronic service bits on the gearbox while the sump is off.

8th Sep 2019 9:29am

Dolphinboy

Member Since: 07 Dec 2009
Location: Bristol
Posts: 3156

2015 Range Rover Autobiography SDV8 Baltic Blue

I would check transfer box, especially alignment of any props. They do have a shelf life and a oil change may well cure it.

Last edited by Dolphinboy on 9th Sep 2019 9:35am. Edited 1 time in total

8th Sep 2019 7:47pm

WB

Member Since: 26 May 2016
Location: London
Posts: 303

Thanks dolphinboy. Can you advise how I would check the alignment of props?

The car has done 79k miles by the way. Is it likely the transfer box is knackered or more likely in need of an oil change? I guess I’ll do the oil change anyway as it’s a simple cheap job.

Thanks for the help

8th Sep 2019 9:07pm

Dolphinboy

Member Since: 07 Dec 2009
Location: Bristol
Posts: 3156

It sure how to check alignment. I just remember someone had a transfer box prob (knocking on acceleration or deceleration) and found it was drive train out if alignment but can’t remember where

Deffo check/ change oil in first instance. They can get low due to seepage I think.

8th Sep 2019 10:00pm

WB

Member Since: 26 May 2016
Location: London
Posts: 303

Thanks, oils ordered and just about to order new drain/fill plugs too.

9th Sep 2019 4:17pm

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