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Hoovering/Humming Noise!?
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OurSam
 


Member Since: 30 May 2018
Location: Cheltenham
Posts: 11

United Kingdom 2010 Discovery 4 3.0 TDV6 HSE Auto Siberian SilverDiscovery 4
Hoovering/Humming Noise!?

Quick question: My D4 (my10) is making an odd noise that even my local Indy can’t identify. The minute you pull away there is what can only be described as a distant noise that sounds like someone hoovering with the occasional metallic rattle. It doesn’t increase with speed and stops completely when you come to a stop, if I lift off the brake it starts even before I accelerate. It also seems to get louder (at slow speed) when turn the steering wheel to the right.
Any ideas before I booked it in, Indy suggested may be a heat shield rattling...
Car drives perfectly by the way Sad
 

Last edited by OurSam on 6th Sep 2018 4:03 pm. Edited 1 time in total 
Post #197876229th Aug 2018 11:22 am
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OurSam
 


Member Since: 30 May 2018
Location: Cheltenham
Posts: 11

United Kingdom 2010 Discovery 4 3.0 TDV6 HSE Auto Siberian SilverDiscovery 4

125 views and no comments Shocked

Quick update - it is still making the noise (which you may describe as humming rather than hoovering) but now I have noticed its worse when I use hard left or right lock and then, sometimes, stops for 5-6 miles and slowly creeps back. Also, it doesn't do it when going backwards...?

Proper stumped, especially as the Independent (Tim Fry LR in Cheltenham) couldn't identify it Confused

Suggestions so far from a FaceBook post:

Torque Convertor (although doesn't increase with speed)?
Heat Sheild rattling?
Diff noise (although doesn't increase with speed)?
Tyre guys jacked it up on Compressor Cover (recently changed the rears)?

Any advice would be well received and much appreciated!
  
Post #19812866th Sep 2018 4:00 pm
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PROFSR G
 


Member Since: 06 Mar 2017
Location: Lost
Posts: 4580

Ukraine 2009 Discovery 3 TDV6 Commercial XS Auto Stornoway GreyDiscovery 3

Quote:
Tyre guys jacked it up on Compressor Cover (recently changed the rears)?


I would think this should be you're first port of call, as its unlikely no damage was done!
 yµ (idµ - eAµ) ψ=mψ

 
 
Post #19812966th Sep 2018 5:00 pm
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kajtzu
 


Member Since: 10 Aug 2017
Location: Helsinki
Posts: 6538

Finland 2005 Discovery 3 4.4 V8 HSE Auto Cairns BlueDiscovery 3

I think a heat shield would really rattle rather than hum. At least the heat shields I’ve had loose have rattled when driving over potholes or uneven ground - not while driving normally and especially not constantly. They’ve also been VERY obvious when the car is raised and usually you can feel them with your hands whether they move or not.
  
Post #19812996th Sep 2018 5:09 pm
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galwaygreen
 


Member Since: 30 Oct 2011
Location: plymouth
Posts: 6525

United Kingdom 2016 Discovery 4 3.0 TDV6 Graphite LE Auto Loire BlueDiscovery 4

ensure back windows are up....fully
  
Post #19813016th Sep 2018 5:13 pm
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kajtzu
 


Member Since: 10 Aug 2017
Location: Helsinki
Posts: 6538

Finland 2005 Discovery 3 4.4 V8 HSE Auto Cairns BlueDiscovery 3

What wasn’t on your list but might be plausible is a wheel bearing. It’s not necessarily always a grinding noise.
  
Post #19813026th Sep 2018 5:13 pm
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M3DPO
 


Member Since: 22 Sep 2010
Location: Notts.
Posts: 8043

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

Did to do it before new tyres where fitted? what tyres have you fitted?
 It can when others can't,
It will when others won't,
It goes where others don't. 
 
Post #19813076th Sep 2018 5:29 pm
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Fitzy73
 


Member Since: 09 Feb 2014
Location: Truro
Posts: 2407

United Kingdom 2010 Discovery 4 3.0 TDV6 XS Auto Causeway GreyDiscovery 4

My 2010 D4 also had a very distant humming noise, something which I really had to listen for and if I turned the radio on you certainly couldn’t here it. I also couldn’t hear it at idle, just when I initially pulled away and by 10mph it was drowned out or gone.

Given the noise was so easy to not notice I ignored it, but about a month later I started to get normal ride height only messages if I changed the ride height. My independent initially could get any error codes from it so was reluctant to change the compressor, but a few weeks later the message was constant and last month a new compressor was fitted.

Unfortunately, this coincided with having to return my licence, but on the few journeys I have made as a passenger it seems to have fixed the noise. Whilst I wouldn’t perhaps have thought this was your problem, given what you said about the tyre fitters, I would definitely want to have your compressor looked at, as even if it is fine, they may have dislodged something that is now making a noise.
 Andy

 
 
Post #19813096th Sep 2018 5:41 pm
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DSL
Keeper of the wheelie bin 


Member Since: 11 May 2006
Location: Off again! :-)
Posts: 72740

Ukraine 

Pulling the compressor fuse should help rule it in/out. Thumbs Up
   
Post #19813196th Sep 2018 6:23 pm
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