Member Since: 17 Jul 2014
Location: Renfrewshire
Posts: 142
DSC off more power?????
Evening (erm....mornin) .
My disco has always felt like it bogs down pulling away in first without revs which kinda defeats the purpose of a torquey diesel manual. It generally always feels a bit gutless. Egr's blanked. Im not expecting miracles from a 2.7 ton car but it should be better than it is. Anyway I was playing about and tured off DSC and it has noticeably transformed the way the car pulls away and generally feels more lively all round. WHY? is this the case with all d3's or have I a fault?
Mike Park ran a diagnostic on it (not looking for this fault at the time though so hadn't mentioned it) and I had a few errors up but nothing to worry about which I assume where cleared.
15th Jan 2016 3:36 am
doz
Member Since: 15 Jun 2014
Location: Southampton
Posts: 436
Never tried that with my manual. I know you said no faults but I had an oil temp sender issue which made the car act very strange at low revs. Mine kept telling the ecu it was -30°C.
15th Jan 2016 8:59 am
discophil36
Member Since: 17 Jul 2014
Location: Renfrewshire
Posts: 142
If you get the chance try driving around today with dsc off to see if yours drives better it be interesting to know. With regard oil temp sensor what exactly was the weird symptoms you were getting?
15th Jan 2016 9:15 am
DG Site Moderator
Member Since: 12 Dec 2005
Location: The Gaff
Posts: 50968
Having to drive around with DSC off is not normal ...and even though it's never truly "off" to the fullest extent ...it would be a shame if the motor had to call on it to help prevent a roll over scenario only to find it's off.
Better to look for other reasons as to why your motor is not performing correctly tbh.21 year LR veteran > D2 GS 2003 > D3 S 2006 > D3 HSE 2009 > D4 HSE 2013 > D4 HSE 2015 > D5 HSE 2018 > DS HSE R-Dynamic P300e 2021
15th Jan 2016 9:21 am
doz
Member Since: 15 Jun 2014
Location: Southampton
Posts: 436
discophil36 wrote:
If you get the chance try driving around today with dsc off to see if yours drives better it be interesting to know. With regard oil temp sensor what exactly was the weird symptoms you were getting?
A fluctuating idle speed, not by much but enough to notice and most annoying was a sudden dip in revs when just pulling away
15th Jan 2016 9:35 am
discophil36
Member Since: 17 Jul 2014
Location: Renfrewshire
Posts: 142
Yes I've had that aswell and was told could be oil temp. although today funny enough revs have been rock solid but was -1° . Are we talking about engine oil sensor or gearbox oil temp sensor as I understand there are two. Although mines a manual
15th Jan 2016 10:21 am
Sidestick
Member Since: 22 Apr 2012
Location: Rome
Posts: 2301
Since 2012 every year i organize a week end on the Alps where we use to spend some hours driving on a icy racetrack called "ghiacciodromo".
At an altitude of 2000 mt my D3 (2,7 with DPF) run very lazy from idle to 2200 rpm and when we are on the racetrack the best performances i achieve are with this setting:
- DSC off
- "Sand" mode on TR
- Command shift on manual.
But... due to the slippery surface of the racetrack, when the car goes to corner in under or oversteer the fu***ing DSC wake up and cut the engine right in the moment you need a good torque to come up from a turn, so the car stabilize itself but fun is lost
I'm frustrated from this behaviour, anybody knows a way to full cut out DSC without power loss?- Easy-Lift suspension module 4.0
- GoodWinch 9500 lb
- Full underbody protections
- Tree/Rock sidebars
- Prospeed roofrack & ladder
- Compressor guard
- Raised Air Intake
- Driving lights (2+4)
- 50 mm Waffle boards
- Altox Heater control
- Overland Rooftop Tent
- Rear seats entertainment
- Front & Rear camera
- GVIF
- Removable tow bar
- Cubby box fridge
- BFG KO2 265/65R17
- iidTool BT
15th Jan 2016 10:36 am
doz
Member Since: 15 Jun 2014
Location: Southampton
Posts: 436
discophil36 wrote:
Yes I've had that aswell and was told could be oil temp. although today funny enough revs have been rock solid but was -1° . Are we talking about engine oil sensor or gearbox oil temp sensor as I understand there are two. Although mines a manual
Engine oil
15th Jan 2016 3:38 pm
discophil36
Member Since: 17 Jul 2014
Location: Renfrewshire
Posts: 142
Cheers doz
15th Jan 2016 3:46 pm
jenkinsdh
Member Since: 11 Aug 2015
Location: Hinckley
Posts: 53
Sidestick wrote:
anybody knows a way to full cut out DSC without power loss?
[disclaimer: what follows is the thoughts of a non-expert with no detailed system knowledge ]
Would disconnecting an ABS ring do it? Without full knowledge of it's wheel speeds I'm guessing the car would probably put itself into a [relatively] safe mode of zero DSC functionality. Of course this measure would also disable your ABS, Terrain Response and HDC as well as giving you a warning light or two so it may not be of benefit in your situation! You'd then just have to reconnect the ABS ring when you're going back on road.
In terms of a simpler solution (button, software, IID etc) I'd guess that this is one of those times where the car is far clever than us drivers and it will therefore make it impossible to completely switch it off.
JenkinsDH
15th Jan 2016 4:21 pm
Sidestick
Member Since: 22 Apr 2012
Location: Rome
Posts: 2301
Disconnecting ABS sensor or ABS fuse, make Terrain Response unusable and what's going on about center differential? It probably goes fully open and the car could loose traction (that i need on the raceway)...
I was aiming to the gyroscope under drivers seat, but really not sure cause it could be responsible of the engine power limitation like when DSC is active (a sort of "limited performance" advice on the cluster display).- Easy-Lift suspension module 4.0
- GoodWinch 9500 lb
- Full underbody protections
- Tree/Rock sidebars
- Prospeed roofrack & ladder
- Compressor guard
- Raised Air Intake
- Driving lights (2+4)
- 50 mm Waffle boards
- Altox Heater control
- Overland Rooftop Tent
- Rear seats entertainment
- Front & Rear camera
- GVIF
- Removable tow bar
- Cubby box fridge
- BFG KO2 265/65R17
- iidTool BT
Disconnecting an ABS sensor is not going to make the car happy...
I second DG's post. Either you have a fault, are imagining it or expecting too much from it. Current: Discovery 3 06MY (55 reg) HSE Auto Zambezi Silver Allisport Fast Road Intercooler, V8 Brakes, Silicone IC Hoses, EGRs Blanked, Remapped, De-Cat pipe, FBHIC
Freelander 2 2007 HSE Manual Tambora Flame
Previous: FL2 56 reg SE Manual Black (written off )
Disco 3 06 reg B7S Manual Rimini Red
Disco 2 TD5 Y reg ES Manual Blue - Chipped
Several Discovery 300 TDis
15th Jan 2016 4:53 pm
DG Site Moderator
Member Since: 12 Dec 2005
Location: The Gaff
Posts: 50968
When DSC is switched off, the system decision to reactivate DSC is wholly in response to extreme yaw and lateral signals to the ABS control module...not the physical function of ABS itself.
Disabling an ABS circuit or anything else that uses the ABS control module for that matter would not be recommended tbh.21 year LR veteran > D2 GS 2003 > D3 S 2006 > D3 HSE 2009 > D4 HSE 2013 > D4 HSE 2015 > D5 HSE 2018 > DS HSE R-Dynamic P300e 2021
15th Jan 2016 5:25 pm
Robbie
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932
You should not be messing with any of this - leave the systems alone.
Land Rover - Turning Drivers into Mechanics Since 1948
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Allisport Fast Road Intercooler, V8 Brakes, Silicone IC Hoses, EGRs Blanked, Remapped, De-Cat pipe, FBHIC
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