Member Since: 28 May 2014
Location: Belfast
Posts: 497
Slow pick-up from standing start.
Hi all,
For the last 12 yrs of discovery ownership I've always had petrol V8s i.e. D2 4.0 V8 and latterly D3 4.4 V8. But 2 weeks ago I changed my D3 and got my first diesel engined car, a D4 3.0 SDV6.
Having had the V8s I'm used to instant power when you put the foot down and to being able to join traffic from side roads, roundabouts and other situation, requiring fast responses, quickly and safely. Since having the D4, however, I'm finding that the car almost stalls in these same situations and I find myself in dodgy situations. For example; today I stopped at a roundabout where I was turning left and needed to move quickly, to safely make the turn, but when I put the foot down the car slowly moved, at a snails pace.
Don't get me wrong I don't expect the same performance as my old V8, but I did expect that I would be able to pull in to traffic safely instead almost standing still.
I'm hoping all of you, who've owned diesel powered Discos, can either confirm that what I'm finding is; not normal and it's something to look into, with maybe a hit of where i should start, or that it's normal.
The car in question is; a 2014 D4 SDV6 HSE with 58600mls. Needs a new rear prop shaft, as the centre support bearing is gone (diaphragm ripped) and new battery that the dealer is going to replace.
2nd Sep 2020 10:19 pm
twr7cx
Member Since: 03 Mar 2019
Location: Tasmania
Posts: 184
Have you used an appropriate diagnostic tool (e.g. a GAP Diagnostics IID Tool) to read the error codes? Are there any? If so, what are they?Mine - MY09 L319 D3 HSE Lion 2.7 TDV6 and modified MY03 LT L318 Discovery 2a HSE Td5 15P
Hers - MY12 L319 D4 Lion 2.7L TDV6
Dads - MY12 L319 D4 Lion 2.7L TDV6
3rd Sep 2020 4:17 am
Kilovolt
Member Since: 29 Jun 2015
Location: South Derbyshire
Posts: 1082
Good morning,
I would be inclined to say this post turns up every now and again from 'new' D4 owners. Many have stated they are just not spritely out of the blocks so to speak.
I have an MY13 D4 SDV6 and you just learn and adapt to their characteristics. They need a good push to launch out of junctions - I guess I do it without thinking about it.
I believe I am right in saying in normal drive (D) they start off in second gear. Try downshifting to 1st at a junction and see if that changes anything. The downside to that is you have to be quick out of the box to upshift to 2nd within only tens of metres of moving off. I know you cannot live with that day-to-day but it would offer you a comparison.
If you do not show any fault codes (as the 2nd post suggests) then it may just be 'normal'. I flushed my gearbox at 85k and that sharpened its ideas up dramatically. The adaption was reset at the same time (some are not fan of this reset activity). I'm guessing your mileage is not as high as that?
Stalling sounds more like a fault than a characteristic I must admit.
Failing that, see if you can get a drive in a similar aged D4 so you can make an informed comparison.
My thoughts at least. Good luck with your new purchase "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
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)
3rd Sep 2020 7:25 am
pjm-84
Member Since: 04 Oct 2016
Location: Hampshire
Posts: 2615
Interesting.
The V8 is a bit sensitive on the throttle hence when I drove the new Defender it felt "dull" and underpowered.
That said my VW T5 with the DSG has the delay in pulling away which you do get used to but can still be quite alarming. On tricky junctions pulling away in Sports helps but doesn't eliminate the issue. Once going she pulls like a train so I assume it programmed in to avoid wheelspin (FWD only).
The second gear pull away was quite common in the older 5 and 6 speed diesel automatics that I had (Volvo and BMW). The BMW was helped with a software fix from memory. The later BMW with the 8 speeds didn't suffer with the same problem. The 6 speed in the V8 doesn't have this issue (quite the opposite!)
3rd Sep 2020 8:06 am
twr7cx
Member Since: 03 Mar 2019
Location: Tasmania
Posts: 184
The way the original poster describes it sounds far more significant than just it's a bit slow:
Alphamale wrote:
Since having the D4, however, I'm finding that the car almost stalls in these same situations and I find myself in dodgy situations. For example; today I stopped at a roundabout where I was turning left and needed to move quickly, to safely make the turn, but when I put the foot down the car slowly moved, at a snails pace.
Don't get me wrong I don't expect the same performance as my old V8, but I did expect that I would be able to pull in to traffic safely instead almost standing still.
Stalling and standing still. That's not right by any measure.
We have two MY12 D4 TDV6's - the base spec with littler 2.7L engine and 6 speed automatic transmissions and neither could be described like that. Especially after a BAS ECU remap and EGR removal...Mine - MY09 L319 D3 HSE Lion 2.7 TDV6 and modified MY03 LT L318 Discovery 2a HSE Td5 15P
Hers - MY12 L319 D4 Lion 2.7L TDV6
Dads - MY12 L319 D4 Lion 2.7L TDV6
check you're not brushing against the brake pedal as you plant your right foot. some cars are more sensitive than others but it is a safety feature that kills the power if car thinks breaks are being pressed, even in the slightest..
Dean
====================================
2011 D4 XS - OBD port protection, RLD spare wheel protector, All LED interiors lights, Timed Climate enabled, iiD tool paired.
2011 D4 Landmark - Stolen from same dealer before I paid for it
2011 D4 GS - Stolen whilst at dealer ... All LED interiors lights, DRLs, Spare Wheel protector.
1996 300Tdi - Eaten by tin worms
3rd Sep 2020 8:46 am
Moo D3 Decade
Member Since: 13 Aug 2010
Location: UK
Posts: 14512
Do a search. It's a known issue. There was a software fix and it worked for some and not for others.
You'll get used to it and adjust your driving style accordingly, but it'll still catch you out now and again.D4 HSE EU6 (Known as Jeeves)
New Defender L663 110 SE (known as Noddy!) Sold
Sold Volvo XC90 R-Design (known as Basil)
Sold - D4 HSE (Known as Gerty)
No longer the Old Buses original owner
231,000 miles and counting
05 S manual owned from March 2005
D4 Face lifted
Still original injectors and turbo
V8 Front brakes
BAS Remap, Allisport Intercooler and deCat
EGRs blanked
T-Max split charge
Hanibal Expeedition rack
Prospeed ladder
Duratrac tyres
IID BT
BAS FBH control
3rd Sep 2020 8:57 am
darrind
Member Since: 04 Jul 2008
Location: In A World of My Own!
Posts: 2908
My wife always complains of the same thing when she drives the D3 or 4 in stead of her 4.0 Petrol Jeep Wrangler.
Perhaps test another D4 to see if you experience the same lag, there could be an EGR issue to deal with that hasnt thrown up any codes yet.Must stop buying shiny toys....
3rd Sep 2020 9:13 am
Alphamale
Member Since: 28 May 2014
Location: Belfast
Posts: 497
After a little further searching on this topic I have found that it has indeed been an ongoing problem and is not a normal function by design, but has developed as a fault on a number of LRs. It also transpires that it is a known problem with LR and there have been Technical Bullet-ins on the matter. A previous post from 2013 is; https://disco3.co.uk/forum/discovery-4-hes...91114.html Seeing as it's such a wide spread problem, there seams little point driving another similar car as it could also have the problem.
So it's not meant to be like this and maybe a software update 'might' help, but I think I'll also try a new brake switch.
It looks as though some of us may have accepted the situation as normal and are working around it, but seeing as it could potentially cause an accident I'm not prepared to leave it there, just yet.
No faults for engine or gearbox, but using GAP IID the recurring faults showing on my car are;
DDM-Driver Door
B10EB-15 (2C) Driver's door double locking motor - General electrical failure - circuit short to battery or open
( on 30-08-2020 14:30:16 at 58906 mi )
B1108-11 (6C) Driver's door central locking motor - General electrical failure - circuit short to ground
( on 29-08-2020 11:52:10 at 58905 mi )
HVAC-Ventilation
B13C2-86 (2F) Windshield misting sensor - Bus signal/message failure - signal is invalid
( on 29-08-2020 11:35:52 at 58905 mi )
B13C2-96 (2F) Windshield misting sensor - Component failure - internal failure
( on 29-08-2020 11:35:52 at 58905 mi )
IPMB-Camera
U0140-08 (28) Lost communication with body control module - General failure information - bus signal/message failure
( on 18-05-2014 10:43:06 at 25 mi )
PDM-Passenger Door
B10EC-15 (68) Passenger's door double locking motor - General electrical failure - circuit short to battery or open
( on 30-08-2020 16:16:29 at 58915 mi )
B1109-11 (6C) Passenger's door central locking motor - General electrical failure - circuit short to ground
( on 29-08-2020 11:52:10 at 58905 mi )
4th Sep 2020 8:20 am
Oswiperus D3 Decade
Member Since: 02 Apr 2010
Location: Chelmsford, Essex
Posts: 1600
Pretty sure I've seen on here that a good remap (BAS / Alive) eradicates the issue.
I haven't bothered on my 14 plate D4 commercial as it's not too bad, I think you sort of anticipate when it's more likely to do it and it and plant your foot earlier and becomes second nature and don't even think about it. Previous 2016 D4 I think it was more prominent but maybe I've just got more used to the ways of D4's.Stu
2016 D4 Landmark current
2022 Defender D300 SE Gone
D4 2014 XS Commercial - Gone
D4 2016 hse lux montalcino red - Gone
D3 2005 se java black - current
D3 2005 base manual - gone
D2 1999 TD5 E white - current
4th Sep 2020 8:48 am
dewillia
Member Since: 04 Aug 2019
Location: Wolverhampton
Posts: 71
I had the same issues on a Jag XF, Jag XJ and my now LR4. All the same engine all solved by a remap
4th Sep 2020 2:43 pm
pjm-84
Member Since: 04 Oct 2016
Location: Hampshire
Posts: 2615
The problem is made worse by the V8. That's just sensitive and goes. It still catches me out sometimes.
4th Sep 2020 3:26 pm
Alphamale
Member Since: 28 May 2014
Location: Belfast
Posts: 497
Really hate to think that I have to pay for a remap because of a co**up by JLR. It's such an issue I think they should cough-up for it, but what are the chances, eh?
4th Sep 2020 5:47 pm
Moo D3 Decade
Member Since: 13 Aug 2010
Location: UK
Posts: 14512
Between slim and zero. D4 HSE EU6 (Known as Jeeves)
New Defender L663 110 SE (known as Noddy!) Sold
Sold Volvo XC90 R-Design (known as Basil)
Sold - D4 HSE (Known as Gerty)
No longer the Old Buses original owner
231,000 miles and counting
05 S manual owned from March 2005
D4 Face lifted
Still original injectors and turbo
V8 Front brakes
BAS Remap, Allisport Intercooler and deCat
EGRs blanked
T-Max split charge
Hanibal Expeedition rack
Prospeed ladder
Duratrac tyres
IID BT
BAS FBH control
4th Sep 2020 9:42 pm
Alphamale
Member Since: 28 May 2014
Location: Belfast
Posts: 497
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum
... All LED interiors lights, DRLs, Spare Wheel protector.
Between slim and zero. 
