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Auto changes up, back down, then up again!
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nichop
 


Member Since: 17 Jun 2010
Location: Woking
Posts: 97

United Kingdom 
Auto changes up, back down, then up again!

I've just started getting this strange problem with my Disco3. Accelerating away from a roundabout for example, it will change up as normal then when it gets to 4th, it almost immediately changes back down to 3rd for 2-4 seconds (depending on how hard I'm accelerating) and then back to 4th again. Its done 143k miles and no change in gearbox yet so, I'm wondering if this is the beginning of the end and if so, whether its worth getting the box repaired or sell the car.

Any ideas what the problem might be and whether its a gearbox repair needed ?
  
Post #20652611st Jul 2019 9:07 am
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lynalldiscovery
 


Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274

United Kingdom 2006 Discovery 3 TDV6 Metropolis LE Auto Bonatti GreyDiscovery 3

Oil level is always worth checking
  
Post #20652801st Jul 2019 11:19 am
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knwatkins
 


Member Since: 19 Sep 2018
Location: Poole, Dorset
Posts: 716

United Kingdom 

Have you ever changed the fluid?
 Kev

MY2014 L405 RR Vogue SE 4.4 SDV8 in Corris Grey
MY2010 L320 RRS HSE 3.0 TDV6 in Stornoway Grey 
 
Post #20652821st Jul 2019 11:23 am
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10337

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

Does it pull less well in 4th ?
  
Post #20652831st Jul 2019 11:24 am
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nichop
 


Member Since: 17 Jun 2010
Location: Woking
Posts: 97

United Kingdom 

Pulls just the same. I havent' checked oil level. Just had gearbox specialist plug in diagnostics and it came up with an error relating to e-clutch on 4th gear and something about mismatch of ratios? I didnt get the actual error code. They said the clutch is on its way out and its a gearbox recon job Sad At 2.2k+VAT and the trade in value of the car 2.5k I now have to consider whether its worth doing. What do you think? Am I just throwing good money away?
  
Post #20653731st Jul 2019 4:37 pm
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10337

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

what year
what condition
  
Post #20653741st Jul 2019 4:40 pm
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aja4x4
 


Member Since: 14 Apr 2019
Location: Westbury
Posts: 2459

United Kingdom 2005 Discovery 3 TDV6 SE Auto Zambezi SilverDiscovery 3

I would get the oil flushed out and replaced if its never been done before you start looking at rebuilds, it could just be the oil breaking down and crud in the system.
  
Post #20653861st Jul 2019 5:43 pm
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knwatkins
 


Member Since: 19 Sep 2018
Location: Poole, Dorset
Posts: 716

United Kingdom 

I agree. If it's on 143k and the fluid has never been changed, get it flushed.

The manufacturer, ZF, recommend a fluid change every 62,000 miles or 8 years, whichever comes first, however, the damage may already be done. It may be worth a shot though.
 Kev

MY2014 L405 RR Vogue SE 4.4 SDV8 in Corris Grey
MY2010 L320 RRS HSE 3.0 TDV6 in Stornoway Grey 
 
Post #20653941st Jul 2019 6:01 pm
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nichop
 


Member Since: 17 Jun 2010
Location: Woking
Posts: 97

United Kingdom 

2005. 143k. Not sure how to answer the condition question but it has been serviced fully. Don't think its ever had an oil flush but will check.

thanks for the thoughts.
  
Post #20654561st Jul 2019 9:49 pm
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10337

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

Other ppl on here may recon the gearbox.

If you got 20k more out the engine would that be enough. ?
  
Post #20654611st Jul 2019 10:19 pm
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