Nikki
Member Since: 10 Mar 2015
Location: Melbourne
Posts: 140
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My brand new D4 2015 has a drive-line vibration between 60 and 85km/h
Wheels balanced, swapped with another car, no change. Ideas anyone please? 
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 11th Mar 2015 12:27 pm |
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sagecaster
Member Since: 30 Oct 2007
Location: Scotland
Posts: 8
 
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Check the hand brake shoes aren't rubbing. I have had 3 sets of rear discs changed under warranty. The symptom was intermittent vibration at speed. The rear discs show up burnt around the drum if this is happening.
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| 13th Mar 2015 12:01 pm |
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Nikki
Member Since: 10 Mar 2015
Location: Melbourne
Posts: 140
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Thanks, will check
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| 13th Mar 2015 1:02 pm |
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Nikki
Member Since: 10 Mar 2015
Location: Melbourne
Posts: 140
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The dealer has isolated this to the e-diff .
Not sure how this would account for the symptoms?
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| 17th Mar 2015 10:42 am |
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stumpy
Member Since: 18 Apr 2007
Location: Stoke on Trent
Posts: 620
 
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I had an unbalanced rear drive shaft on a D3 could be that!  110 XS Utility
D4 HSE MY15
TD5 90HT
D4 HSE MY12
D3 HSE MY56
D3 HSE MY55
Do more with your 4x4 Join www.volunteer4x4.org
If it moves funk it, and if doesn't, funk it till it does
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| 17th Mar 2015 12:43 pm |
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motolite
Member Since: 18 Mar 2013
Location: Sydney
Posts: 931
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Nikki wrote:The dealer has isolated this to the e-diff .
Not sure how this would account for the symptoms?
Glad you found the problem. Keep us up-to-date with the result
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| 17th Mar 2015 9:06 pm |
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Nikki
Member Since: 10 Mar 2015
Location: Melbourne
Posts: 140
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Still not sure this is the problem, although there were whispers around the dealership that the e-diff had metal filings in it.
Hugely dissapointing to say the least!
Will keep posting outcomes.
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| 17th Mar 2015 10:08 pm |
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motolite
Member Since: 18 Mar 2013
Location: Sydney
Posts: 931
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disappointing, I agree, butlook on the bright side,it's at the dealership and you're not stranded in the middle of nowhere
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| 17th Mar 2015 10:35 pm |
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Nikki
Member Since: 10 Mar 2015
Location: Melbourne
Posts: 140
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Called the service manager, apparently the e-diff was failing, metal filings
in it! Waiting on new diff from UK. Dealer loaned me another D4, nice PR.
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| 20th Mar 2015 1:10 pm |
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Nikki
Member Since: 10 Mar 2015
Location: Melbourne
Posts: 140
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Installed new e-diff with LRA's approval. This was not the cause of the vibration 60kph to 80kph, so they are now clueless. Any diagnosis or actions? Would selecting neutral at say 70kph help the diagnosis?
Needless to say, I'm extremely disappointed.
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| 27th Mar 2015 5:21 am |
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motolite
Member Since: 18 Mar 2013
Location: Sydney
Posts: 931
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nikki, disappointing to say the least. Are the dealers keeping the car to check out other parts of the drivetrain? I'm not sure how these gearboxes work before suggesting you try that idea @ 70.
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| 27th Mar 2015 6:29 am |
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Nikki
Member Since: 10 Mar 2015
Location: Melbourne
Posts: 140
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Yes, dealers are keeping the car, and have loaned me a demo Discovery 2015.
However, they are at a loss to diagnosis, who can help here please?
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| 27th Mar 2015 6:53 am |
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sagecaster
Member Since: 30 Oct 2007
Location: Scotland
Posts: 8
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Engaging neutral won't really tell you much on an auto and its unlikely to be a the gearbox if the vibration happens at these speeds and but different gears. So test it through different gears in paddle shift.
Drive line faults change in relation to forward speed and tend to be worse under load, so pulling uphill for example. By contrast "free wheeling" ie no power going downhill will put no load through the drive train. If the vibration reduces (and it can disappear altogether) then you have a definitely have fault in the drive line somewhere, not gearbox or engine.
In my experience conventional Diffs tend to get very noisy long before you get any vibration.
Did they strip and re-calibrate the park brake shoes?
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| 27th Mar 2015 6:12 pm |
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Nikki
Member Since: 10 Mar 2015
Location: Melbourne
Posts: 140
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Thanks very much, very helpful, will keep posting.
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| 27th Mar 2015 10:22 pm |
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Nikki
Member Since: 10 Mar 2015
Location: Melbourne
Posts: 140
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Turns out, it was the rear prop shaft. Makes you really paranoid, an un-diagnosed un-related e-diff problem uncovered during the hunt.
How many un-diagnosed build problems are there, to come out later to bite you, even after the warranty period?
Back to the old LandRover reputation.
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| 31st Mar 2015 12:45 pm |
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