Member Since: 03 Nov 2009
Location: Greater Venice
Posts: 2025
Slight flat spot or accelerator delay on 2300-2400 rpm
Occasionally, not always, I feel a sort of flat spot or slight accelerator delay on 2300-2400 rpm.
It feels more perceptible in high gears (IV, V and VI).
Some idea? Do I have to control aught?Discovery 5 tdv6 HSE Corris Gray Outback Engineering Limited Edition IID Pro MV License
12th Jun 2017 7:31 am
James W
Member Since: 27 Mar 2008
Location: Wirral, UK
Posts: 3067
Is it not just the turbo lag until the second turbo kicks in?D4 XS, gone, much loved, never forgotten
2018 FFRR SDV8 Autobiography - Gone to someone with less sense and more time to enjoy it
2016 Toyota Hilux Invincible - Liberating experience
12th Jun 2017 7:39 am
Disco_Mikey
Member Since: 29 May 2007
Location: Dundee, Scotland
Posts: 20727
Member Since: 27 Mar 2008
Location: Wirral, UK
Posts: 3067
I've just learnt to prepare for it now and know when to expect it. And not to panic when overtaking. D4 XS, gone, much loved, never forgotten
2018 FFRR SDV8 Autobiography - Gone to someone with less sense and more time to enjoy it
2016 Toyota Hilux Invincible - Liberating experience
12th Jun 2017 8:43 am
BrettKaz
Member Since: 11 Nov 2013
Location: Canberra
Posts: 209
apologies if this is patronising but check that you're not catching edge of your brake pedal ... previous D4 had some setting (which current doesn't) that prevented you accelerating if brake pedal moved even a few millimetres..
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
12th Jun 2017 10:11 am
dgardel
Member Since: 03 Nov 2009
Location: Greater Venice
Posts: 2025
Member Since: 03 Nov 2009
Location: Greater Venice
Posts: 2025
James W wrote:
Is it not just the turbo lag until the second turbo kicks in?
Disco_Mikey wrote:
Yes. Very frustrating, and highly annoying...
Being my first D4 and not having much experience on this vehicle, I noticed the thing.
Especially on the highway with the engine at about 2200 - 2300 rpm and ask acceleration but not so much to make a "shift down"
But are you saying that it is normal and that it is present in all D4? Discovery 5 tdv6 HSE Corris Gray Outback Engineering Limited Edition IID Pro MV License
I've not noticed it on new D4 ... but we have the "benefit" of most of the motorways round here having 50mph limits.
on the previous one it was mainly when I pulled out of junctions that it lacked power for a split-second (but enough to be worrying ) until I worked out it was the brake pedal issue.
only needed the slightest of touches ...
the marks on the sole of my shoe are from new car, so it's still happening but doesn't stop acceleration so I can only assume it's an option ?.
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
12th Jun 2017 11:23 am
Gareth Site Moderator
Member Since: 07 Dec 2004
Location: Bramhall
Posts: 26700
What fuel are you using? We have normal diesel and premium diesel here. The difference is not massive, but I do notice a tendency to change down then accelerate on the cheaper diesel, instead of just accelerate on the torque of the engine which seems easier to achieve on the premium stuff.
I have to be honest though, I've never thought my D4 to be lacking in power or having a flat spot at any point.
12th Jun 2017 12:13 pm
dgardel
Member Since: 03 Nov 2009
Location: Greater Venice
Posts: 2025
Normally I use Premium Diesel. Engine is quieter
Eni Diesel + 55 of Cetane number + cleaninig and lubrificating additives
and + 2SO by me Discovery 5 tdv6 HSE Corris Gray Outback Engineering Limited Edition IID Pro MV License
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... All LED interiors lights, DRLs, Spare Wheel protector.
