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Auto gear box sticking
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Redgull
 


Member Since: 30 Aug 2013
Location: East Sussex
Posts: 1127

2005 Discovery 3 TDV6 HSE Auto Zambezi SilverDiscovery 3
Auto gear box sticking

Hi
Can anyone help please ?

My Disco 3 auto gearbox is sticking intermittently, when it does happen it is mainly in 1st and 2nd gears, on acceleration after slowing for traffic lights, roundabout etc.
To begin with it would go up to 4000 revs before changing, I took it to my local mechanic, who plugged it in for an upgrade (it needed two), at first it seemed ok, but tonight it was sticking again but this time not changing until 4000-5000 revs.

Has anybody got any ideas as to what the problem is ?

Fingers crossed that its something simple ( and cheap !!). Question
  
Post #125195612th Mar 2014 8:43 pm
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Disco_Mikey
 


Member Since: 29 May 2007
Location: Dundee, Scotland
Posts: 20731

Scotland 2005 Discovery 3 TDV6 HSE Auto Cairns BlueDiscovery 3

Start with brake light switch and/or bulbs Thumbs Up
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Post #125196212th Mar 2014 8:49 pm
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geoff.
 


Member Since: 24 Jan 2010
Location: West kent
Posts: 8531

England 

it would probably help if you filled in your profile so we knew what year of D3/D4 you had

but i would take a look at your gear linkage first and has mikey says brake light switch

also where a bouts in east sussex Question
  
Post #125196312th Mar 2014 8:49 pm
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Redgull
 


Member Since: 30 Aug 2013
Location: East Sussex
Posts: 1127

2005 Discovery 3 TDV6 HSE Auto Zambezi SilverDiscovery 3

Profile completed Thumbs Up

Thanks for your help.
  
Post #125196612th Mar 2014 8:52 pm
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Redgull
 


Member Since: 30 Aug 2013
Location: East Sussex
Posts: 1127

2005 Discovery 3 TDV6 HSE Auto Zambezi SilverDiscovery 3

Near Eastbourne
  
Post #125196812th Mar 2014 8:53 pm
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geoff.
 


Member Since: 24 Jan 2010
Location: West kent
Posts: 8531

England 

not to far from me Thumbs Up
  
Post #125197012th Mar 2014 8:53 pm
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Redgull
 


Member Since: 30 Aug 2013
Location: East Sussex
Posts: 1127

2005 Discovery 3 TDV6 HSE Auto Zambezi SilverDiscovery 3

Near Eastbourne
  
Post #125197212th Mar 2014 8:54 pm
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Robbie
 


Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932

United Kingdom 2013 Discovery 4 3.0 SDV6 HSE Auto Baltic BlueDiscovery 4

You need to get all 4 speed sensors compared on a straight bit of road, as well as checking your tyre pressures / rolling radius.

Still no vehicle details in your profile...

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Last edited by Robbie on 12th Mar 2014 9:12 pm. Edited 1 time in total 
Post #125198912th Mar 2014 9:09 pm
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Disco_Mikey
 


Member Since: 29 May 2007
Location: Dundee, Scotland
Posts: 20731

Scotland 2005 Discovery 3 TDV6 HSE Auto Cairns BlueDiscovery 3

^^^ That too. A difference in tyre profiles, or a soft tyre will also cause a similar issue
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Post #125199012th Mar 2014 9:11 pm
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Redgull
 


Member Since: 30 Aug 2013
Location: East Sussex
Posts: 1127

2005 Discovery 3 TDV6 HSE Auto Zambezi SilverDiscovery 3

Thanks for your help.

Robbie, is that something I can do myself ?

I have updated my profile, maybe it takes a while to show.
  
Post #125200312th Mar 2014 9:28 pm
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Robbie
 


Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932

United Kingdom 2013 Discovery 4 3.0 SDV6 HSE Auto Baltic BlueDiscovery 4

You can certainly check that the tyre profiles are correct and at the right pressures. Comparing the wheel-speeds takes a diagnostic tool with live data, such as an IID Tool. Geoff could do this for you too.

Without a vehicle or diagnostics to look at there is no guarantee that your issue is related to wheel speeds, but our thinking is that the gearbox may be holding the gears because it thinks it is cornering. This mode is designed to keep you safe but if the sensors report a speed discrepancy it can trigger the corner mode when accelerating down a straight.

Your profile now has your location but not your car details.

Thumbs Up
 Land Rover - Turning Drivers into Mechanics Since 1948

Battery & Quiescent Current Drain Testing

Diagnostics for:
Defender, FL2, D3, D4, Evoque, RRS & FFRR
A not-for-profit enterprise


 
 
Post #125204912th Mar 2014 10:16 pm
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Redgull
 


Member Since: 30 Aug 2013
Location: East Sussex
Posts: 1127

2005 Discovery 3 TDV6 HSE Auto Zambezi SilverDiscovery 3

Tyres all ok, and I will try break switch.

Does the Disco 3 2005 HSE Auto have a gear selector sensor or something that tells the car which gear it should be in Question

It drives fine in manual, just doesn't seem to know which gear to be in when accelerating in low gear.
  
Post #125224113th Mar 2014 10:18 am
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Redgull
 


Member Since: 30 Aug 2013
Location: East Sussex
Posts: 1127

2005 Discovery 3 TDV6 HSE Auto Zambezi SilverDiscovery 3

Took it to my local mechanic and he thinks it could be a torque convertor problem ??
  
Post #125226613th Mar 2014 11:08 am
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Martin
Site Admin and Owner 


Member Since: 06 Nov 2004
Location: Hook Norton
Posts: 18454

United Kingdom 2006 Discovery 3 TDV6 SE Manual Buckingham BlueDiscovery 3

Redgull wrote:
I have updated my profile, maybe it takes a while to show.


You haven't filled in the colour which is why it doesn't show up, have set it to Zambezi Silver temporarily.
 06 D3 SE / 15 LR D90 XS SW / 88 LR 90 Td5 / 68 BMW 2000 ti
Any issues with the site let me know! 
 
Post #125228413th Mar 2014 11:45 am
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albal
 


Member Since: 31 Jul 2011
Location: Southampton
Posts: 592

United Kingdom 

Is the steering angle sensor and yaw sensor used to hold gears too?
  
Post #125232413th Mar 2014 12:57 pm
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