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pdes
Member Since: 09 Jan 2007
Location: Cambridgeshire
Posts: 338
  
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| 500 miles on the D4 - But........ |
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Make no mistake, the D4 MY12 is the most superb bit of kit. There is no other vehicle that comes close IMHO. But, there is one serious disappointment. The turbo-lag is as bad as the D3!! When slowing down then accelerating again it can take a good couple of seconds before the revs pick up and by that time you have added some pressure to the juice pedal so when it does kick in, there's an almighty lurch. I suspect I will get used to it but I shouldn't have to. Even the dealer said that this had been eliminated 
So, MY12ers, are you getting the same issue or do I have a fault?
Cheers D4 HSE MY2015
8 Speed
Causeway Grey
Towpack
Surround cameras (joke!)
Vision assist
Extended roof rails
Rear Ladder
Remote heat
Prospeed sliders with steps
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 24th Sep 2011 11:49 am |
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Ted Newman
Member Since: 09 Oct 2010
Location: SE London
Posts: 840
 
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Our 2011 January built D4 is fine! But then I do not expect it to react like a racing car. LR Discovery 4 XS pulling an Airstream 532 Caravan also own (since new) a 1996 MGF
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| 24th Sep 2011 11:56 am |
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pdes
Member Since: 09 Jan 2007
Location: Cambridgeshire
Posts: 338
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Unnecessary quote removed
Nothing to do with looking for racing car qualities. This is normal driving, for instance approaching a junction then deciding it's safe to go but finding nothing under the pedal for a few seconds. Can be unnerving if you are trying to join busy traffic. D4 HSE MY2015
8 Speed
Causeway Grey
Towpack
Surround cameras (joke!)
Vision assist
Extended roof rails
Rear Ladder
Remote heat
Prospeed sliders with steps
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| 24th Sep 2011 12:02 pm |
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crews control
Member Since: 18 Mar 2007
Location: Dorset
Posts: 5011
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Are you sure it's turbo lag and not the adaptive gearbox selecting the wrong cog when you want to move after slowing down? Mine did this for a while when it was new, but has slowly got better as I've put more spirited miles on the clock. I know mine's only the six speed but maybe they react in the same way until they've adapted to your style? Try driving in sport mode around town and see if it improves at all?
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| 24th Sep 2011 12:42 pm |
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Ted Newman
Member Since: 09 Oct 2010
Location: SE London
Posts: 840
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Never get these delay problems - either driving solo or towing - from what you say there is something wrong with your D4 and needs sorting by the dealer. LR Discovery 4 XS pulling an Airstream 532 Caravan also own (since new) a 1996 MGF
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| 24th Sep 2011 1:29 pm |
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pdes
Member Since: 09 Jan 2007
Location: Cambridgeshire
Posts: 338
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crews control wrote:Are you sure it's turbo lag and not the adaptive gearbox selecting the wrong cog when you want to move after slowing down? Mine did this for a while when it was new, but has slowly got better as I've put more spirited miles on the clock. I know mine's only the six speed but maybe they react in the same way until they've adapted to your style? Try driving in sport mode around town and see if it improves at all?
Mmmm hadn't thought of that. I'll defer the panic! D4 HSE MY2015
8 Speed
Causeway Grey
Towpack
Surround cameras (joke!)
Vision assist
Extended roof rails
Rear Ladder
Remote heat
Prospeed sliders with steps
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| 24th Sep 2011 8:46 pm |
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highbayrack
Member Since: 09 Jul 2008
Location: Northamptonshire
Posts: 2776
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I got mine on 1st July and have sometimes had the same problem as you describe, I also had it to start with on my D3 when I first got it also, but then realised it my driving style. What I mean is, if your right foot is still ever so slightly putting the smallest amount of pressure on the brake pedal and the gas at the same time it confuses the whatever gizmo that controls such things. If that makes any sense.  On a mission to find the perfect Pork Pie. Just Found it (I think)..(Yes I have)
Official product sponsor for "Bloodhound SSC" 1000+ mph world land speed record
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| 24th Sep 2011 9:04 pm |
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lespes
Member Since: 17 Sep 2009
Location: Sitting Down
Posts: 2232
 
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Mine had this fault and turned out to be a faulty corulater switch, was led to beleive some issues have been had with faulty switches.
No problem now new switch fitted D4 Landmark MY16 Santorini Black THE LAST
D4 HSE MY12 Marmais Teal: Gone. Missed a lot!
Freelander 2 SD HSE MY11 Silver:Thankfully gone.
D4 HSE MY11 Silver: Gone missed !
Range Rover Sport MY06 HSE Buck Blue: Gone missed!
Discovery D2 TD5 Facelift MY Red Gone Missed!
Discovery D2 TD5 Cobalt Blue: Gone Missed!
Discovery D1 Auto Oxford Blue Not missed at all!
Discovery D1 Avalon Blue First LR! missed!
Now demoted to a VW
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| 24th Sep 2011 10:47 pm |
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doubledoom
Member Since: 09 Jul 2010
Location: Lowestoft
Posts: 132
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Quote:When slowing down then accelerating again it can take a good couple of seconds before the revs pick up and by that time you have added some pressure to the juice pedal so when it does kick in, there's an almighty lurch. I suspect I will get used to it but I shouldn't have to. Even the dealer said that this had been eliminated
That is the way it is with previous MY. I was told on another thread that it is not turbo lag but a protection on the gearbox.
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| 25th Sep 2011 7:43 pm |
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PaulC
Member Since: 27 Nov 2009
Location: Vale of Glamorgan
Posts: 112
 
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Could be just getting used to your driving style. I've been driving mine pretty fast since new, and now it holds gears for longer than expected.. It definitely has much less turbo lag than D3 and if it seems sluggish after a week maybe you should get it checked out
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| 25th Sep 2011 8:01 pm |
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