DiscoDunc
Member Since: 08 May 2006
Location: Bristol
Posts: 16390
  
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I hope so too  Duncan
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If I'd known I was going to be so thirsty this morning I'd have drunk more beer last night.
FFRR Autobiography 4.4 SDV8 MY17
D4 HSE MY13 SOLD
FFRR 3.6 Vogue TDV8 SOLD
D4 HSE MY10 SOLD
D4 SE TECH MY15 SOLD
D4 XS MY12 SOLD
D4 HSE MY10 SOLD
D3 HSE MY06 - Re-Cycled Worldwide
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 27th Oct 2011 9:24 am |
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PaulP
Member Since: 04 May 2007
Location: Barcelona
Posts: 4317
  
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 (Wastegates are not needed on variable-vane turbos)
Just to worry you even more, my auto-box slips as well (needs a new torque convertor), so it could well be related if I assume that I never noticed the over-run noise when the TC was working correctly a couple of years ago.
 2006 Discovery 3 TDV6 SE Auto Buckingham Blue
2007 Golf GT DSG
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| 27th Oct 2011 9:28 am |
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jamesbond007
Member Since: 26 Jan 2010
Location: Algarve, Portugal
Posts: 263
 
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I just have a slight vibration only in 3rd guear on acceleration at around 2000 rpm. Only in 3rd. The older I get, the better I was.
Discovery 3 TDV6 Auto (BAS remap) after Defender TD4 110 Crew Cab and 1964 SIIA 88.
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| 27th Oct 2011 9:52 am |
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jamesbond007
Member Since: 26 Jan 2010
Location: Algarve, Portugal
Posts: 263
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DiscoDunc wrote:I hope so too
No sign of the mechanical gurus on this thread though...... 
I would have thought "sucking" in the thread title might have attracted more people......  The older I get, the better I was.
Discovery 3 TDV6 Auto (BAS remap) after Defender TD4 110 Crew Cab and 1964 SIIA 88.
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| 28th Oct 2011 6:06 am |
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jamesbond007
Member Since: 26 Jan 2010
Location: Algarve, Portugal
Posts: 263
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Seems like a dead one. Strange that nobody has any solution. The older I get, the better I was.
Discovery 3 TDV6 Auto (BAS remap) after Defender TD4 110 Crew Cab and 1964 SIIA 88.
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| 3rd Nov 2011 7:12 am |
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abloke
Member Since: 13 Apr 2012
Location: gloucestershire
Posts: 2
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Hi i also have a simular noise its nearly always there to be heard but most noticable on deceleration seems to come from under the car drivers side, mechanic at stratstone L/R cheltenham couldnt here it and said every things sounds fine  but it could be the turbo gate opening and closing as this can be heard through the air intake in the wing he said .. It does sound like a noisy electric actuator drive, moving position inaccordance with accelerator pedal position, only when engine has warmed up its real anoying especialy when the windows down. Can anyone please help with a diagnose 2.7d auto 55 hse 24mpg av
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| 22nd Apr 2012 10:58 pm |
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Sparkie
Member Since: 18 Mar 2008
Location: UK
Posts: 38
 
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Well, it was a while ago that i started this thread, and most replies pointed at the wastegate on the turbo. I recently had the turbo replaced, and the sound is still there!
Back to the drawing board...
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| 11th Feb 2013 1:23 pm |
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lunar
Member Since: 17 Jun 2012
Location: prestatyn
Posts: 93
 
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I also get this hissing noise, but i was told these turbos dont have a waste gate as they have a variable vane turbo controled by a motor but i may be wrong, i am also sufering lack of power below 2000rpm, hope somone has the answer to this
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| 11th Feb 2013 1:31 pm |
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Sparkie
Member Since: 18 Mar 2008
Location: UK
Posts: 38
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Hi Lunar.
It's a strange one this! My hissing sound usually happens on decelleration, but it appears sometimes when just cruising along, i can get it to go off by just accellerating or decellerating. It usually comes back though. Your lack of power could be the EGR's, mine were replaced last year, so the sound isn't to do with them either.
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| 11th Feb 2013 1:41 pm |
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blue200tdi
Member Since: 23 Sep 2012
Location: Lincoln
Posts: 1094
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It could be the brake vacuum pump or a hose to or from that. It's at the back of the engine on the driver's side. Or it could be the brake servo hissing? Both are close to the driver, maybe that is what you can hear? Other than a waste gate or an induction pipe to the turbo I have no idea. If as it seems there is no waste gate then that's one thing less to strike off the list.
I have an auto and I have no hissing noise when slowing down or any other time. You guys are gonna be busier than a test bench in a plunger factory!
Java black 2006 2.7 TDV6 HSE AUTO.
2014 Kawasaki ZZR1400 Performance sport.
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| 11th Feb 2013 10:41 pm |
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blue200tdi
Member Since: 23 Sep 2012
Location: Lincoln
Posts: 1094
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From the workshop manual describing the turbo...
The variable vane turbocharger, fitted to the LH exhaust manifold of the TdV6 engine, makes it possible to vary the exhaust gas flow of the turbine, dependent on engine operation. This improves the power transfer to the turbine wheel and compressor, particularly at low engine speeds, thus increasing the boost pressure. The guide vanes are opened progressively as the engine speed increases so that the power transfer always remains in balance with the required charger speed and the required boost pressure level. Variable vanes facilitate better use of the exhaust gas energy so as to further improve the efficiency of the turbocharger and thus of the engine, compared to the more conventional 'wastegate control'. You guys are gonna be busier than a test bench in a plunger factory!
Java black 2006 2.7 TDV6 HSE AUTO.
2014 Kawasaki ZZR1400 Performance sport.
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| 11th Feb 2013 10:47 pm |
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Znatan
Member Since: 03 Apr 2015
Location: Israel
Posts: 47
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Hello. Having this noise now. Could it be front diff or transfer case? Anyone of you guys had actually did anything to get rid of the noise? I do believe there is problem.. Any suggestion? Thanks !!
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| 28th Jun 2015 7:17 pm |
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M3DPO
Member Since: 22 Sep 2010
Location: Notts.
Posts: 8240
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Does any one with a manual gearbox have this fault?
Another test maybe to slip the gear selector into neutral for a few seconds when the vehicle is making the noise, this should eliminate the gearbox, but try this at your own risk I have accidentally knocked the selector out of drive while traveling, but for anyone who does try it be extremely careful not to go far with the selector lever 
EDIT: Every reply on this post has been made by an Auto owner, so the next question is how many are experiencing this noise who have had a gear box oil change or flush?- it may just be related. It can when others can't,
It will when others won't,
It goes where others don't.
Last edited by M3DPO on 28th Jun 2015 8:58 pm. Edited 1 time in total
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| 28th Jun 2015 8:46 pm |
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Znatan
Member Since: 03 Apr 2015
Location: Israel
Posts: 47
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I did the gear box oil change plus fitted the metal pan. But, this noise started to develop before. So I don't think related to the work on the gear. As well, oil coming out was very good and clean. And no metal on the magnets..
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| 1st Jul 2015 5:32 pm |
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