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Accelerator issue
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winllan1
 


Member Since: 29 Dec 2012
Location: Pwllheli, Gwynedd, Wales
Posts: 17

Wales 2012 Discovery 4 3.0 SDV6 XS Auto Sumatra BlackDiscovery 4
Accelerator issue

I've searched the forum, and cannot seem to find any clear thoughts.

For the past couple of days, when pressing the accelerator nothing happens, regardless of how harsh or gentle one presses the throttle. After the accelerator is pressed and depressed a couple of times it does eventually work.

When starting this morning, the accelerator did not function until about 10 attempts.

The car drives sounds and works fine, with no warning lights or restricted performance.

And touch wood, it's not had any faults or anything replaced recently which could be a contributory factor apart from a set of tyres.

Any thoughts would be appreciated.

12 plate D4
  
Post #23614569th Feb 2024 9:45 am
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10390

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

Probably needs a pedal assembly. It’s all electric.
You could unplug it and reconnect to see if that helps

Faults codes should tell you something
  
Post #23614859th Feb 2024 1:28 pm
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DN
D3 Decade 


Member Since: 24 Jun 2006
Location: W.London.
Posts: 2298

Ukraine 2006 Discovery 3 TDV6 Base 7 Seat Auto Zambezi SilverDiscovery 3

If I use ( very rarely) my FBH remote to run the heater for 20-30 mins before starting, I sometimes get the unresponsive throttle pedal for 10 secs or so. I put this down to there being a temperature mismatch ie. a relatively cold engine oil temp signal conflicted by an almost fully warm coolant temperature signal. Maybe you have a problem with one of your temp sensors, either oil, or coolant ? If you can, look at the live readings of both, to see if they are realistic or not.
 D3 owned from new, P017 brake recall, BAS FBHIC, new FBH, LR013487 oil pump, new water pump. RRS front lower suspension arms. New suspension compressor/ relay. New Denso alternator. CuNifer rear brake pipes. New GKN rear propshaft. New HPFP belt & tensioner. New A/C Condenser.NO WARRANTY for many many years.  
Post #23614879th Feb 2024 2:29 pm
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Gilgamesh
 


Member Since: 01 Feb 2024
Location: Beckenham
Posts: 15

England 

A faulty accelerator pedal sensor can cause symptoms such as delayed or erratic response, reduced performance, or even no response at all. Though I am not sure that's the main issue here, You should take it to a mechanic.
  
Post #236317329th Feb 2024 12:48 pm
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winllan1
 


Member Since: 29 Dec 2012
Location: Pwllheli, Gwynedd, Wales
Posts: 17

Wales 2012 Discovery 4 3.0 SDV6 XS Auto Sumatra BlackDiscovery 4

Update,

The throttle was changed as a replacement was £15 from eBay.

A couple of days later - restricted performance...

The front MAF sensor was replaced (the second one in our ownership) - and all is well.

Whether the throttle needed to be replaced remains a good question.

Thanks for all the suggestions.
  
Post #23633582nd Mar 2024 8:32 pm
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