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Help, Whining noise plus judder plus loss of power
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IanNP
 


Member Since: 17 Aug 2009
Location: Lancashire, Chorley ..ish
Posts: 204

United Kingdom 2016 Discovery 4 3.0 SDV6 HSE Lux Auto Corris GreyDiscovery 4

Which is the low pressure turbo hose .. I am guessing the one that runs over the top of the radiator and goes down right.

I will have a look at the oil level in the morning.

I can't see it being the wear in the pulley - the belt was changed at the service also.

As you say james it is a 'load' issue.
The engine revs OK in netural - ticks over fine. Starts fine. Runs OK until it gets just to the ' > ' at the bottom of the temp guage. Then this judder appears. 1500 - 2000 rpm is most noticable. Which is of course 70mph in 6th!
It is made worse - more noticable with the horse trailer attached.

Ian
 ..so what can I fiddle with today that ain't broken ...?  
Post #8807118th Jan 2012 7:44 pm
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Dan_NL
 


Member Since: 19 Sep 2010
Location: world
Posts: 1213


It's the widest hose [low pressure] ; thin one is high pressure [goes to intercooler].
Check the hose clamps on the wide hose Rolling Eyes
  
Post #8807438th Jan 2012 9:00 pm
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rizzonland
 


Member Since: 01 Aug 2011
Location: Dorset
Posts: 34

United Kingdom 2008 Discovery 3 TDV6 HSE Auto Alveston RedDiscovery 3

Unashamed bump I'm afraid. Symptoms are still persisting, have checked out the accessible hoses with no obvious fatigue. Any more luck Ian or ideas from the floor?
  
Post #88762123rd Jan 2012 9:23 pm
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IanNP
 


Member Since: 17 Aug 2009
Location: Lancashire, Chorley ..ish
Posts: 204

United Kingdom 2016 Discovery 4 3.0 SDV6 HSE Lux Auto Corris GreyDiscovery 4

I have made no great discoveries, other than non orig parts have been used in the service.
So I have ordered from Land Rover a fuel filter and air filter .. just in case.

The oil has also been filled so that overnight it is around half inch higher on the dip stick than I would have liked.

Have had the fault codes read again after a few thousand miles. Nothing to report there, other than an error from one of the EGR valves (which have been plugged), that won't now go away. From memory it was something to do with 'flow'.
Also at idol the balancing of four of the injectors is around '850', while two of them are going as high as '1000'?

I have a number of runs this week with the horses in tow which always makes the judder more noticable Sad

Ian
 ..so what can I fiddle with today that ain't broken ...?  
Post #88764023rd Jan 2012 9:48 pm
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c928jon
 


Member Since: 24 Jun 2009
Location: COVENTRY
Posts: 48

2005 Discovery 3 TDV6 HSE Auto Stornoway GreyDiscovery 3

My apologies, I'm updating a later thread. 85% of my whine was worn rear discs rubbing the lip on the pad. There is still a roar/not right induction noise. I unplugged the MAF and have run it for two days (short runs) unplugged. Pick up/ throttle response is much better. The new one should be in tomorrow, I'll update after I've fitted it.
  
Post #88765223rd Jan 2012 10:08 pm
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rizzonland
 


Member Since: 01 Aug 2011
Location: Dorset
Posts: 34

United Kingdom 2008 Discovery 3 TDV6 HSE Auto Alveston RedDiscovery 3

Thank you both for the update. fingers crossed. Thumbs Up
  
Post #88858725th Jan 2012 9:39 pm
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c928jon
 


Member Since: 24 Jun 2009
Location: COVENTRY
Posts: 48

2005 Discovery 3 TDV6 HSE Auto Stornoway GreyDiscovery 3

Ok, So MAF Sensor fitted, throttle response much better...for a while until I guess the ecu relearnt.

We still have the same problem,flat throttle response and the more I drive it it has become intermittent.

We had our second baby last weekend so tinkering time is over, can anyone recommend a disco expert in the midlands who can take over?
  
Post #90137525th Feb 2012 7:24 am
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rizzonland
 


Member Since: 01 Aug 2011
Location: Dorset
Posts: 34

United Kingdom 2008 Discovery 3 TDV6 HSE Auto Alveston RedDiscovery 3

Right then, intercooler hoses changed with no improvement. My thoughts have now moved onto the DM Flywheel. Could this component have a failure mode which, once warmed up, would cause the engine to be lumpy under load? I can't find any mention elsewhere on the site about what kind of noise a DMF would make when it is on the way out. Or I could just give up and wait for it to get worse..... sigh Big Cry
  
Post #91458026th Mar 2012 8:58 pm
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IanNP
 


Member Since: 17 Aug 2009
Location: Lancashire, Chorley ..ish
Posts: 204

United Kingdom 2016 Discovery 4 3.0 SDV6 HSE Lux Auto Corris GreyDiscovery 4

The DMF on mine was noisy on tick-over - clattered.
It was awkward to get into and out of gears.
When setting off with the trailer it would judder as the clutch was let up.

I am still not convinced that my judder is the injectors. There are two types of injectors used on the D3, both look the same but according to VDO they are not interchangeable. Our local diesel injection specialist also has two part numbers for the D3 injectors. The best price I could get for mine was £140+VAT.

So I have been exploring other bits of the vehicle as even if I get six new injectors there is no guarantee it will cure the problem. Having taken their guy for a test drive to demonstrate the fault to him, he got the glazed look which I have seen all to often. This is followed by the comment 'not had a fault like that before'.

The transfer box is currently top of my hit list. I am getting what I think is an odd reading from the 'Slip Speed Sensor'. But without anything to compare it against I have no idea if it is correct or incorrect. As the oil in the box gets warm it starts to give me a reading or '0' or '636' mph. The saw tooth waveform produced seems to mimic the judder. Coincidence ?
I have changed the very expensive ‘Special’ oil in it. About half a litre came out and 1.5lts went back in.
No difference.
There is suppose to be a way of calibrating it but I don't seem to be able to trigger it manually. Must need T4 for that.
If anyone can tell me what this reading is and what it should be I would be grateful.
My thoughts have drifted on occasion to the gearbox and the DMF. It has only been in there 3months surely it can’t be that..

Ian
 ..so what can I fiddle with today that ain't broken ...?  
Post #91478527th Mar 2012 10:15 am
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jambo1972
 


Member Since: 15 Jan 2010
Location: Chorley, Lancs.
Posts: 100

Scotland 2005 Discovery 3 TDV6 S Auto Adriatic BlueDiscovery 3

Ian, has anyone suggested the torque converter to you as have seen under load judders on here being as a result of that? Apparently the clutch plates inside it slip causing the judder. A transmission oil change or mega flush can fix he problem. What's the mileage on yours? Mine has been doing it for 6mths or so, never gets any worse but do want it fixed. Kevin
 K7MUN TDV6 S Auto, 2005, Adriatic Blue, Xenons, Harmon Kardon, SE Alloys & AT's. 170k miles. BAS Blanked EGR's, K&N Filter, new air susp compressor. 1st Landie, now full LR convert.  
Post #91506527th Mar 2012 9:09 pm
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IanNP
 


Member Since: 17 Aug 2009
Location: Lancashire, Chorley ..ish
Posts: 204

United Kingdom 2016 Discovery 4 3.0 SDV6 HSE Lux Auto Corris GreyDiscovery 4

jambo1972 wrote:
Ian, has anyone suggested the torque converter to you as have seen under load judders on here being as a result of that? Apparently the clutch plates inside it slip causing the judder. A transmission oil change or mega flush can fix he problem. What's the mileage on yours? Mine has been doing it for 6mths or so, never gets any worse but do want it fixed. Kevin


If only mine was an auto, but it is a manual.
Thanks anyway.
Ian
 ..so what can I fiddle with today that ain't broken ...?  
Post #91507327th Mar 2012 9:37 pm
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rizzonland
 


Member Since: 01 Aug 2011
Location: Dorset
Posts: 34

United Kingdom 2008 Discovery 3 TDV6 HSE Auto Alveston RedDiscovery 3

Right, have finally cracked it (fingers crossed!). The whining noise was due to a worn aux belt (serpentine?) tensioner and the judder/surging under load was caused by the previous service garage putting the fuel lines onto the wrong connections of the fuel filter. She is running sweetly now and have regained my perma-grin after towing the Ifor all day without a hint of rev variance or whining noise.

Whilst I'd like to take the credit, it was in fact all down to the excellent service provided by Steve from TS Norman. 80,000 mile service (inc transfer oil), cam belt change, EPB readjusted, software upgraded (plus loads more that I can't even remember) and the use of a rather enjoyable freelander for a few days all for an honest price. I know where I'll be taking my Disco for its services from now on. Thanks Steve Bow down
  
Post #95992228th Jul 2012 1:21 pm
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