Advertise on DISCO4.COM
Forum · Gallery · Wiki · Shop · Sponsors
  Home · FAQ · New Posts · My Posts · PMs · Search · Members · Members Map · Groups · Profile · Donate · Register · Log In  
DISCO4.COM > Technical (D3)

Revs fluctuate when driving stable speeds
Post Reply  Down to end
Page 1 of 1
Does your Disco3 have fluctuating revs?
Yes, haven't found a fix...
60%
  60%  [6]
Yes, got it fixed!
20%
  20%  [2]
No
20%
  20%  [2]
Total Votes: 10

Joan
 


Member Since: 31 Mar 2009
Location: Breda
Posts: 11

Netherlands 2005 Discovery 3 TDV6 HSE Auto Zambezi SilverDiscovery 3
Revs fluctuate when driving stable speeds

Hi,

My Disco3 has the strange rev hunting behavior, similar to this video http://video.google.co.uk/videoplay?docid=-2768384953457429371#.

I have this at different speeds e.g. 90km p/h, 124km p/h etc and at different RPM (often around 2000, but not always). It seems the engine is searching for the right rev, giving extra fuel and reducing it again. Its happening with both a cold and warm engine, at stable speeds, with and without cruise control. Its very irritating.

There are several treats on this topic but non of them is giving a real answer to the problem. Often the gear box is issue comes up (double flush), but I believe that is not related. I believe its some sort of sensor or software problem.

I would really appreciate a reply from somebody that had this problem and solved it.

Thanks a million. /Joan  
Post #53265210th Oct 2009 11:12 pm
View user's profile Send private message View poster's gallery Reply with quote
Gareth
Site Moderator 


Member Since: 07 Dec 2004
Location: Bramhall
Posts: 26705

United Kingdom 

Thats my car in the video, and I'm afraid I sold it and bought a newer D3 before it was sorted out. The new one does not exhibit the same behaviour. A gearbox oil change was suggested to me as the first thing to try to cure it.  
Post #53268311th Oct 2009 12:31 am
View user's profile Send private message View poster's gallery Reply with quote
Bushwanderer
 


Member Since: 27 Nov 2007
Location: Northern Rivers, NSW, Australia
Posts: 2050

Australia 2005 Discovery 3 TDV6 S Manual Buckingham BlueDiscovery 3

Hi Joan,
I, also, had this problem (although not as bad as in the video).

As my D3 is manual, it wasn't the dreaded auto problem.

I mentioned it to the dealer when it went in for a (B) service.

They couldn't find the problem, but did a software upgrade.

The problem was solved. (Sorry, I didn't enquire as to what the software upgrade was to address (sticking vanes on the turbo?).

Best Wishes,
Peter The Bearded Dragon  
Post #53269311th Oct 2009 2:11 am
View user's profile Send private message View poster's gallery Reply with quote
Joan
 


Member Since: 31 Mar 2009
Location: Breda
Posts: 11

Netherlands 2005 Discovery 3 TDV6 HSE Auto Zambezi SilverDiscovery 3

Hi,

Yes Gareth thanks for posting the video. It perfectly shows the issues with the revs. So so far the solutions are:
1.) Sell your disco3 when it starts to Rev Hunt
2.) Get a software upgrade

Solution 1 isn't a option for me, as I love my Disco (and I can't afford a new one yet). So I will go for solution nr 2, and tomorrow I will go to the local LL specialist (Route58) to see if they can upgrade the software. I will let you know the outcome.

thanks /Joan  
Post #53309611th Oct 2009 10:19 pm
View user's profile Send private message View poster's gallery Reply with quote
Joan
 


Member Since: 31 Mar 2009
Location: Breda
Posts: 11

Netherlands 2005 Discovery 3 TDV6 HSE Auto Zambezi SilverDiscovery 3
Rev. Problem Fixed

Hi,

Good news, today I got my car back and from the local Land Rover specialist (www.route58.nl) and they fixed the problem! Apparantly the fluctuating revs is a very uncommon problem and it took a couple of steps.
1.) First they thought it was the ESG (?) exhaust system as it has several error message in the log. But fixing the ESG didn't do the trick.
2.) Then they upgraded the software, the issue with the revs remained
3.) Then they changed the gear-box oil-filter (pretty big operation, need to lift the engine + refresh the gearbox oil), and then the problem was fixed. Very Happy

Next week we will refresh the gear box oil again, to get rid of the old oil as much as possible. All in all it was a pretty expensive operation but I am glad that its fixed and I don't need a new gearbox.

Now my Disco 3 drives wonderfull again. Gareth and Peter thanks for your help. /Joan  
Post #5460124th Nov 2009 11:16 pm
View user's profile Send private message View poster's gallery Reply with quote
Bushwanderer
 


Member Since: 27 Nov 2007
Location: Northern Rivers, NSW, Australia
Posts: 2050

Australia 2005 Discovery 3 TDV6 S Manual Buckingham BlueDiscovery 3

Hi Joan,
Glad that it is now sorted. Thumbs Up

Thanks for the update,
Peter The Bearded Dragon  
Post #5460485th Nov 2009 12:02 am
View user's profile Send private message View poster's gallery Reply with quote
Gareth
Site Moderator 


Member Since: 07 Dec 2004
Location: Bramhall
Posts: 26705

United Kingdom 

Glad you got the issue sorted out Joan.  
Post #5460705th Nov 2009 1:31 am
View user's profile Send private message View poster's gallery Post Reply
Display posts from the last:  
Post Reply Back to top
Page 1 of 1
Jump to:  
< Previous Topic | Next Topic >


Posting Rules
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum



DISCO4.COM Copyright © 2004-2024 Futuranet Ltd & Martin Lewis
DISCO3.CO.UK RSS Feed - All Forums
DISCO4.COM is independent and not affiliated to Land Rover.
Switch to Mobile Site