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DISCO4.COM > Faults & Fixes (D4)

Whistling noice 1800-2200 rpm 2012 D4 SDV6
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LarsMW
 


Member Since: 15 Feb 2024
Location: Valdres
Posts: 18

Norway 2012 Discovery 4 3.0 SDV6 HSE Auto Java BlackDiscovery 4
Whistling noice 1800-2200 rpm 2012 D4 SDV6

Hi
Loud and annoying whistling noice at around 1800-2000 rpm and louder under load. Tends to be louder when cold and goes away above 2200 rpm. Located on the right side (drivers side in the UK)
2012 D4 3.0 SDV6.

Any good doctor here or any pointers?

Thanks.  
Post #237327715th Jul 2024 9:21 am
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rrhool
 


Member Since: 28 Aug 2014
Location: Norfolk
Posts: 4541

United Kingdom 2007 Discovery 3 TDV6 SE Manual Zermatt SilverDiscovery 3

Intercooler hose split? Have you noticed a loss of power/smoke from the exhaust? Richard


D3 SE 2007. Triumph 2.5Pi 1973. Ferguson TEA20 1948.



Discovery 2 4.0 ES 2001- Gone
Discovery 1 300Tdi ES '95 - Gone
Range Rover Classic '79 - Gone  
Post #237328115th Jul 2024 9:44 am
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LarsMW
 


Member Since: 15 Feb 2024
Location: Valdres
Posts: 18

Norway 2012 Discovery 4 3.0 SDV6 HSE Auto Java BlackDiscovery 4

Hi.
No loss of power, but some exhaust smell in the car ever now and then...
Where is this hose monuted?
Easy to get to?  
Post #237328515th Jul 2024 9:57 am
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Kilovolt
 


Member Since: 29 Jun 2015
Location: South Derbyshire
Posts: 1079

United Kingdom 2013 Discovery 4 3.0 SDV6 Commercial XS Auto Baltic BlueDiscovery 4

Here you go. Quite common in older Discos. Not hard to sort.

https://www.advancedfactors.co.uk/intercooler--hoses-1602-c.asp

https://www.youtube.com/watch?v=FD8CUQQEdog&ab_channel=LRTIME



Inspect them both thoroughly for cracks and/or tears. If in doubt change them anyway.

Good luck Thumbs Up "Track day running - Don't put your foot back on the accelerator until your absolutely sure you don't have to take it off again"

Current Ride: D4 XS Commercial Baltic Blue SDV6 fully loaded with heated everything Smile
Track Days: BMW E36 M3 Evolution MY 1996 (3.2 Litre 377 BHP sat in 1,250 Kgs of car, with a pro safety cage and some serious braking power) Smile 

Last edited by Kilovolt on 15th Jul 2024 10:19 am. Edited 1 time in total 
Post #237328915th Jul 2024 10:18 am
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LarsMW
 


Member Since: 15 Feb 2024
Location: Valdres
Posts: 18

Norway 2012 Discovery 4 3.0 SDV6 HSE Auto Java BlackDiscovery 4

Thx, mate Smile  
Post #237329015th Jul 2024 10:19 am
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Kilovolt
 


Member Since: 29 Jun 2015
Location: South Derbyshire
Posts: 1079

United Kingdom 2013 Discovery 4 3.0 SDV6 Commercial XS Auto Baltic BlueDiscovery 4

Just added this video Thumbs Up

https://www.youtube.com/watch?v=FD8CUQQEdog&ab_channel=LRTIME

Thumbs Up "Track day running - Don't put your foot back on the accelerator until your absolutely sure you don't have to take it off again"

Current Ride: D4 XS Commercial Baltic Blue SDV6 fully loaded with heated everything Smile
Track Days: BMW E36 M3 Evolution MY 1996 (3.2 Litre 377 BHP sat in 1,250 Kgs of car, with a pro safety cage and some serious braking power) Smile  
Post #237329115th Jul 2024 10:20 am
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LarsMW
 


Member Since: 15 Feb 2024
Location: Valdres
Posts: 18

Norway 2012 Discovery 4 3.0 SDV6 HSE Auto Java BlackDiscovery 4

Smashing. Thx again!  
Post #237329215th Jul 2024 10:21 am
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LarsMW
 


Member Since: 15 Feb 2024
Location: Valdres
Posts: 18

Norway 2012 Discovery 4 3.0 SDV6 HSE Auto Java BlackDiscovery 4

Only problem is that these pictures and videos are for D3. I have a 2012 D4 SDV6 3.0 - not the same hoses...  
Post #237395325th Jul 2024 8:13 am
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Flack
 


Member Since: 06 Sep 2006
Location: Preston Lancashire
Posts: 6313

England 2007 Discovery 3 TDV6 XS Auto Stornoway GreyDiscovery 3

Make sure the TSOV is not stuck as this can cause this issue on a D4.

Flack Thumbs Up  
Post #237395525th Jul 2024 8:34 am
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LarsMW
 


Member Since: 15 Feb 2024
Location: Valdres
Posts: 18

Norway 2012 Discovery 4 3.0 SDV6 HSE Auto Java BlackDiscovery 4

TSOV? Please enlighten me Smile  
Post #237395625th Jul 2024 8:34 am
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discosi
 


Member Since: 14 Nov 2013
Location: Staffordshire
Posts: 17

United Kingdom 2011 Discovery 4 3.0 SDV6 HSE Auto Stornoway GreyDiscovery 4

TSOV - google says it is a turbo shut off valve, i don't know where it is.

It could be throttle control body housing seals or left or right inlet manifold, but i think you usually get a decrease in power if they leak sufficiently.
Does the engine have to be under load ? if not get someone to run the engine to that speed and listen under bonnet which I've found quite tricky given all the other noise going on.

Also look for oil leaks from the intercooler pressurised air path around those areas especially around the where the injectors are located.  
Post #237409627th Jul 2024 7:08 pm
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