zig
Member Since: 09 Sep 2005
Location: Scotland
Posts: 619
  
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| Lack Of Response From Accelerator Pedal |
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On starting the vehicle today, after not using it for a few days, it was a bit difficult to start, and it came up with the Terrain Response showing "Grass-Gravel-Snow" which was OK as that was what was previously selected and I was still going to be driving on packed ice/snow . However, on selecting reverse I found there was next to no response from the accelerator pedal (even if it was pushed all the way to the floor) and on selecting drive there was same lack of response. No warning messages were showing. However, on turning the ignition off and restarting the response had returned to normal.
I had a similar experience about a week ago, also with "Grass-Gravel-Snow" selected, but full performance came back after a short time (probably in under a minute), without having to restart the engine (on that occasion I do not remember any difficulty in starting the vehicle).
Any thoughts as to what the cause of the problem is?
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 29th Dec 2009 11:15 pm |
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simon
Member Since: 11 Jan 2005
Location: Shropshire
Posts: 18296
 
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GGS is supposed to retard the throttle.
Its also remembered after engine off, assuming you are going to continue to drive on slippery surfaces.
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| 29th Dec 2009 11:45 pm |
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zig
Member Since: 09 Sep 2005
Location: Scotland
Posts: 619
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Hi Simon.
It is accepted that GGS will limit the throttle. However, the vehicle should still be able to to go faster than at a walking pace. Once it was restarted I was then able to go at faster speeds without the same restriction.
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| 29th Dec 2009 11:53 pm |
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ad15
Member Since: 14 Dec 2008
Location: up that tree
Posts: 4866
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i find that if i select ggs from cold start and hit the throttle it has little effect, try selecting normal driving from cold and see if it does the same thing... one wife.......livid
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| 29th Dec 2009 11:58 pm |
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BrumLee
Member Since: 07 Mar 2008
Location: West Midlands
Posts: 1360
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Have had the same with mine a few times over the past couple of weeks but not used TR. Checked and have no fault codes logged  Last time it happened I cycled the ignition and there was excessive smoke from the FBH for a brief moment, so don't know if it was related as it hasn't happened since.
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| 29th Dec 2009 11:58 pm |
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bellautos
Member Since: 02 Feb 2006
Location: NorthYorkshire
Posts: 2532
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I had the same thing on my wifes D3 a few weeks before crimbo, it turned out to be a weak battery causing the start up faults. also causing a load of weird and wonderfull aray of faults even though it started every time.
New battery and all was good again, i know this may not be relevent to your particular problem but it may help.
Pete
Last edited by bellautos on 30th Dec 2009 12:21 am. Edited 1 time in total
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| 30th Dec 2009 12:12 am |
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ad15
Member Since: 14 Dec 2008
Location: up that tree
Posts: 4866
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should also mention i have one egr valve sticking a little,,, one wife.......livid
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| 30th Dec 2009 12:17 am |
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zig
Member Since: 09 Sep 2005
Location: Scotland
Posts: 619
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Would a faulty/sticking EGR valve not result in a fault message being displayed and would restarting the vehicle be sufficient to clear the problem caused by a faulty/sticking EGR valve?
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| 30th Dec 2009 12:50 am |
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ELD70
Member Since: 28 Jan 2008
Location: Romford.
Posts: 901
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I had this this the other day, was in GGS and then used command shift whilst then then switching off GGS. Totally confused the car/gearbox and would only go five miles per hour foot flat to floor. Does not seem to a problem as such, just a bit of electronic confusion. Now driving BMW 330d Touring....misses D3...but not when at traffic lights 
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| 30th Dec 2009 1:00 am |
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zig
Member Since: 09 Sep 2005
Location: Scotland
Posts: 619
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Have now had the lack of response from the accelerator pedal, when starting from cold, with the Terrain Response turned off a couple of times, so the GGS is a red herring.
Turning the ignition off and restarting returns the response to normal (sometimes needs to be done twice).
It seems that if on starting it is possible to rev the engine in park above about 1000 RPM, then once reverse or drive is selected then the response will be normal.
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| 2nd Jan 2010 4:43 pm |
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Dickydisco
Member Since: 03 Feb 2009
Location: Colchester
Posts: 501
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Have not had the problem with the ggs but have had the problem with starting. It struggles to start and sometimes I miss it on the 1st try and have to turn the key again. Its very lumpy and when i drive it is not as respondent as usual. When sitting at lights in drive I watch the rev counter and its bouncing. once it gets warm it runs fine. its a real pain as I have a real nice car and when it starts is sounds like i2ve put to much choke on a little 1.1 fiesta. Not a good look really Current: D3 commercial
Past: but not forgotten D3 HSE x2, 5 TD5 disco2's, 1 200tdi disco1, 2 300tdi disco1 one of which was a commercial, Off roader with a rather large spec, ARB's and big travel suspension to name a few.
Pajero SWB 2.8 for off road playdays
http://www.youtube.com/watch?v=yYBx3SCl8vs check this for laughs
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| 2nd Jan 2010 9:45 pm |
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PaulP
Member Since: 04 May 2007
Location: Barcelona
Posts: 4317
 
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zig wrote:Would a faulty/sticking EGR valve not result in a fault message being displayed
Only on MY07 TDV6 engines (EURO IV compliant)....the earlier ones don't throw any error message or engine warning lamp  (which is why there is no problem in blanking the EGRs  ) 2006 Discovery 3 TDV6 SE Auto Buckingham Blue
2007 Golf GT DSG
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| 2nd Jan 2010 10:23 pm |
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Annabelle
Member Since: 27 Feb 2009
Location: Camb/Beds
Posts: 216
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Whilst we are on the subject of egr valves sticking, is this a common fault and does the cold weather actually prompt the fault? I believe I am experiencing such a fault and having spoken to a friend with a later model D3, he has had 2 changed in 3 years!
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| 4th Jan 2010 10:39 pm |
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zig
Member Since: 09 Sep 2005
Location: Scotland
Posts: 619
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Judging by the number of posts on this forum then faulty EGR valves is certainly a common problem.
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| 4th Jan 2010 11:25 pm |
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DingMark
Member Since: 14 Sep 2007
Location: Perth Oz or Erbil, Iraq
Posts: 388
 
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Just a thought - if the temperature is below freezing after a summer of not-so-cold weather, could an accumulation of moisture in the diesel fuel be causing this problem? Stopping and re-starting might give warmer return fuel the chance to melt the blockage. This possibility can be easily tested by puting in some fuel antifreeze solution. Granted, this doesn't happen in my locale (never cold nor humid) 8) Jim Dowell - D4 HSE TDi, 12,000 hydraulic winch & hidden winch mount, MTRs, TyreDog, Traxide 2 x aux battery system, fixed air compressor, Dolium roof rack, MitchHitch.
RIP 2005 D3 HSE V8 5 seater gold (stolen and torched)
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| 5th Jan 2010 6:35 am |
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