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Erratic revs and harsh gear change
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Tiger
 


Member Since: 13 Mar 2006
Location: Wales
Posts: 488

England 2014 Discovery 4 3.0 SDV6 XS Auto Corris GreyDiscovery 4
Erratic revs and harsh gear change

So it went in for it's 6 year service last week and after 4 new tyres, diff seal and new fuel pipe it's come back and it's not behaving. (79k)

Only when cold about 5 mins into a journey the revs go all erratic like it's running away with you. Had a couple if harsh gear changes also.

Here's a little video of it playing up. Car was in Park and I wasn't touching the throttle.
http://www.youtube.com/watch?v=n9uGXktYgq0...ata_player

Any ideas?
  
Post #9164151st Apr 2012 4:48 pm
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tlt
 


Member Since: 01 Sep 2006
Location: Austin, TX
Posts: 262

United States 2005 LR3 4.4 V8 SE Auto Zambezi SilverLR3

Strange problems--

Could be a throttle body cleaning is needed. It could also be a sensor gone bad. You may have to get the codes read.

After that it is hard to say, almost seems like an April fools joke otherwise.
  
Post #9168052nd Apr 2012 6:46 pm
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Tiger
 


Member Since: 13 Mar 2006
Location: Wales
Posts: 488

England 2014 Discovery 4 3.0 SDV6 XS Auto Corris GreyDiscovery 4

No joke!

It's at the dealers to see if they can find it.
  
Post #9168582nd Apr 2012 9:20 pm
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Tiger
 


Member Since: 13 Mar 2006
Location: Wales
Posts: 488

England 2014 Discovery 4 3.0 SDV6 XS Auto Corris GreyDiscovery 4

Dealer says Left EGR

£475 to replace all in ... ouch Big Cry
  
Post #9169773rd Apr 2012 10:55 am
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lohr500
 


Member Since: 27 Jun 2008
Location: uk
Posts: 30

2008 Discovery 3 TDV6 SE Auto Zambezi SilverDiscovery 3

Just paid 361 here in Lancashire for same side at main dealers!
I would shop around.
Price you have been quoted seems high for 1 side!
  
Post #9169783rd Apr 2012 11:00 am
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B16 KJR
 


Member Since: 10 Jul 2006
Location: Rosyth, Fife
Posts: 3005

Scotland 

Quote:
Dealer says Left EGR

£475 to replace all in ... ouch


Blank them, a lot cheaper Thumbs Up
  
Post #9169813rd Apr 2012 11:28 am
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lohr500
 


Member Since: 27 Jun 2008
Location: uk
Posts: 30

2008 Discovery 3 TDV6 SE Auto Zambezi SilverDiscovery 3

Good point!
If it is 6 years old it should be early enough for blanking. Non euro 4.
Much cheaper option Thumbs Up
  
Post #9169943rd Apr 2012 12:18 pm
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Tiger
 


Member Since: 13 Mar 2006
Location: Wales
Posts: 488

England 2014 Discovery 4 3.0 SDV6 XS Auto Corris GreyDiscovery 4

It's being done.

It was at the garage, I need it back and working for Easter. They won't blank them (I asked)

I don't have the time, more hassle than it's worth.
  
Post #9170303rd Apr 2012 1:33 pm
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Renton
 


Member Since: 13 Jan 2009
Location: Somewhere in the middle
Posts: 1718

2005 Discovery 3 TDV6 HSE Auto Java BlackDiscovery 3

Well I really hope it cures your problem. Never heared of these symptoms caused by bad EGR's.
Ask for a warranty and don't pay for the EGR if your issues aren't solved.
 CLUB ILLEGAL CAR WASHERS  
Post #9170343rd Apr 2012 1:44 pm
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AHL
 


Member Since: 14 Jul 2010
Location: Kent
Posts: 12

United Kingdom 2005 Discovery 3 TDV6 S Auto Unknown ColourDiscovery 3

I dont think the replacement EGR valve will cure your problem (it may still be faulty) I would be looking at the oil temperature sensor located on the side of the sump.

We had one showing the exact symptoms you have, quite dangerous to drive when parking as it suddenly took off

Try to get your garage to look at the dynamic values for the oil temp sensor when the fault is occuring they may find a reading of -44 degrees c

good luck
  
Post #9171713rd Apr 2012 7:48 pm
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tlt
 


Member Since: 01 Sep 2006
Location: Austin, TX
Posts: 262

United States 2005 LR3 4.4 V8 SE Auto Zambezi SilverLR3

It that a Petrol or TDV?
  
Post #9171743rd Apr 2012 7:50 pm
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grzesiul
 


Member Since: 11 May 2008
Location: UK
Posts: 6265

Poland 2016 Discovery 4 3.0 SDV6 SE Auto Loire BlueDiscovery 4

very strange for EGR
  
Post #9171763rd Apr 2012 7:54 pm
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Disco_Mikey
 


Member Since: 29 May 2007
Location: Dundee, Scotland
Posts: 20713

Scotland 2005 Discovery 3 TDV6 HSE Auto Cairns BlueDiscovery 3

An EGR fault would not cause that. Would be looking more towards a faulty throttle pedal or an engine temp. sensor playing up Thumbs Up
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Post #9182227th Apr 2012 6:47 am
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Tiger
 


Member Since: 13 Mar 2006
Location: Wales
Posts: 488

England 2014 Discovery 4 3.0 SDV6 XS Auto Corris GreyDiscovery 4

AHL wins!

Not the EGR (although that's now done grrr Evil or Very Mad )

But it was the temp sensor
  
Post #9187398th Apr 2012 6:11 pm
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Renton
 


Member Since: 13 Jan 2009
Location: Somewhere in the middle
Posts: 1718

2005 Discovery 3 TDV6 HSE Auto Java BlackDiscovery 3

Hate to say I told you so....

Judging your reaction I assume you paid for the EGR's??? If so, why did you do that??
 CLUB ILLEGAL CAR WASHERS  
Post #9187668th Apr 2012 7:47 pm
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