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pld118



Member Since: 25 Mar 2013
Location: Bairns
Posts: 4218

Scotland 2014 Range Rover Vogue SDV6 Santorini Black
4.2 Supercharged Idling Rough

Hello,

As my wife was about to set off for work this morning she asked me if the engine was racing (the car was parked on the driveway).

It was noteworthy as you normally can't hear anything when the car is idling and it sounded rough, almost like the engine was burbling on tick over (a bit like one of those American mean machine type films when throttles are being blipped just before the car is launched forward into a race). It also had a sound I would normally associate with a hole in a rear exhaust but all of the noise was coming from the engine bay.

I did wonder when driving it under acceleration last night if there was a slight loss of power.

Also, an LR technician came to the house on 18 June and fitted a new battery and I wonder if that might have upset anything.

There are no warning lights on.

Any helpful thoughts would be appreciated because ironically, the excellent Service Manager from the local Main Dealer has just E-mailed me after the new battery fitting to find out how the car is running and I'm due to reply to him

Thanks

Post #195444 21st Jun 2013 8:44am
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Bellini



Member Since: 11 Jan 2012
Location: Berkshire
Posts: 2261

United Kingdom 2007 Range Rover Supercharged 4.2 SC V8 Zermatt Silver

Mine burbles nicely on tickover and I worry not one bit.

Does yours do a lot of short joyrneys, Ryan? Maybe just needs a long run. Si. <This is my name.

I eat rat poison.

A man ain't truly been insulted until he stands buck naked in front of a woman and she didn't even notice. Or care.

Post #195446 21st Jun 2013 8:51am
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pld118



Member Since: 25 Mar 2013
Location: Bairns
Posts: 4218

Scotland 2014 Range Rover Vogue SDV6 Santorini Black

It does Si, most days, only about 10 miles covered.

It's definitely gone notably louder 'overnight'.. it's also 9 years since we had a more powerful engined petrol car too (they've all been diesels since)... so maybe its all just 'new' to us.

Cheers

Post #195451 21st Jun 2013 9:34am
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ebajema



Member Since: 24 Mar 2011
Location: New Plymouth
Posts: 4782

New Zealand 2010 Range Rover Autobiography 5.0 SC V8 Galway Green

It sounds like you may have a fuel issue, i.e. dirty fuel or water in the fuel. Mine is super smooth (granted I had the entire fuel delivery system changed thanks to a cheap fuel pump on Ebay) following a complete clean of the fuel tank, fuel system and inlet tract.

Is your tank near 1/4 full ?? If so you may have the tank balance issue and better fuel up quickly before you are stranded with enough fuel in the tank but it can't get to the pump Sad MY 2010 5.0 SC Galway green and sand interior!!
Have the Faultmate MSV2 Extreme to be tinkering with the settings etc. !!

Post #195459 21st Jun 2013 10:40am
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pld118



Member Since: 25 Mar 2013
Location: Bairns
Posts: 4218

Scotland 2014 Range Rover Vogue SDV6 Santorini Black

Hi, the fuel tank was on 1/4 this morning when the symptoms were present.

The point you make about super smooth is pretty much where I was coming from with the OP... We couldn't believe how quiet this car ticks over and that is why this change is noteable.

Aside to filling up, what next (if you have any thoughts please)?


Last edited by pld118 on 21st Jun 2013 11:24am. Edited 1 time in total

Post #195464 21st Jun 2013 10:57am
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ebajema



Member Since: 24 Mar 2011
Location: New Plymouth
Posts: 4782

New Zealand 2010 Range Rover Autobiography 5.0 SC V8 Galway Green

If it is the famous 1/4 tank issue, then the dealer will have to sort it out. And the fuel pump at "normal" price is quite "stiff", in the 300+ range !!. Mine was 50 thanks to Will spotting it on Ebay Smile MY 2010 5.0 SC Galway green and sand interior!!
Have the Faultmate MSV2 Extreme to be tinkering with the settings etc. !!

Post #195465 21st Jun 2013 11:02am
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Bellini



Member Since: 11 Jan 2012
Location: Berkshire
Posts: 2261

United Kingdom 2007 Range Rover Supercharged 4.2 SC V8 Zermatt Silver

What's the 1/4 tank issue? Confused Si. <This is my name.

I eat rat poison.

A man ain't truly been insulted until he stands buck naked in front of a woman and she didn't even notice. Or care.

Post #195466 21st Jun 2013 11:10am
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stan
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Member Since: 13 Jul 2010
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United Kingdom 

this might help explain,

http://www.fullfatrr.com/forum/topic10086....=fuel+pump ... - .- -.




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Post #195468 21st Jun 2013 11:49am
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kingpleb



Member Since: 07 Jun 2011
Location: Maybe here. Maybe there, I get everywhere!
Posts: 8455

United Kingdom 2005 Range Rover Vogue Td6 Bonatti Grey

Some dealers do still have some in stock but few and far between at such prices Very Happy FFRR MY06 facelift With TDV8 Alloys Zeros/ATR's
Mantec Sump Guard, Rigid Load liner, MY10 BT upgrade.

Post #195472 21st Jun 2013 12:12pm
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Gazellio @ Prestige Cars



Member Since: 22 Jan 2010
Location: Chilterns, UK
Posts: 11309

United Kingdom 2010 Range Rover SE Td6 Zermatt Silver

Seems to only really effect Supercharged models...

Happened to me at the very top of the Woodhead Pass Big Cry

Post #195473 21st Jun 2013 12:27pm
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kingpleb



Member Since: 07 Jun 2011
Location: Maybe here. Maybe there, I get everywhere!
Posts: 8455

United Kingdom 2005 Range Rover Vogue Td6 Bonatti Grey

Possibly due to the higher fuel flow required but the TD6's have had the odd one fail as well in this way as its the balancing part that burgers up!

Though im partially convinced crud buildup could have the same affect. FFRR MY06 facelift With TDV8 Alloys Zeros/ATR's
Mantec Sump Guard, Rigid Load liner, MY10 BT upgrade.

Post #195475 21st Jun 2013 12:33pm
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pld118



Member Since: 25 Mar 2013
Location: Bairns
Posts: 4218

Scotland 2014 Range Rover Vogue SDV6 Santorini Black

That's really helpful thanks...

The car last night felt slightly underpowered but did not 'lose' power as such, it just didn't feel as though it was drawing from all of it's power under brisk accelaration (it had half a tank of fuel in at that time).

Since getting the car 2 months ago (as it's been 'off the road'/ in the garage for repairs so much due to the 'issues') we've barely done 1000 miles and I think we've only needed to fill the tank about 3 or 4 times to date). As mentioned to Bellini, it has only done short journey's/ hasn't had 'a proper run' for about 3 weeks.

Glad I raised the issue and once again this forum proves its worth a weight in gold Thumbs Up

The car has the LR approved used warranty which covers the following:
" Fuel System: Failure of the following parts: Fuel injection systems (excluding Injectors), fuel lift pump, cold start device, tank sender unit, fuel gauge and fuel ECU. But excluding pipes and damage caused by contamination and/or inappropriate fuel. "

I think anyone who has put up with my posts will have grasped by now that I try to be very careful about looking after cars and one thing's for sure, I've not misused it, contaminated anything or used inappropriate fuel.

I'll E-mail the Service Manager, report what has cropped up (in response to his question to me) and will ensure the car gets a good run this weekend/ will monitor it's behaviour/ symptoms.

Post #195477 21st Jun 2013 12:40pm
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CG-SC



Member Since: 06 May 2011
Location: Falkirk
Posts: 528

2006 Range Rover Autobiography Supercharged Zambezi Silver

Sometimes when you start it the viscous fan can be partly engaged and give the effect of the engine racing, mine does this quite often, it's nothing to worry about - my guess is this is what you / your wife has noticed. Stolen / Gone: 2006MY Supercharged LPG Autobiography - Zambezi Silver with Sand/Jet/Jet Oxford Leather.....

Post #195478 21st Jun 2013 12:43pm
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kingpleb



Member Since: 07 Jun 2011
Location: Maybe here. Maybe there, I get everywhere!
Posts: 8455

United Kingdom 2005 Range Rover Vogue Td6 Bonatti Grey

The viscous coupling may be getting on a bit if its doing that i would think. FFRR MY06 facelift With TDV8 Alloys Zeros/ATR's
Mantec Sump Guard, Rigid Load liner, MY10 BT upgrade.

Post #195481 21st Jun 2013 1:27pm
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CG-SC



Member Since: 06 May 2011
Location: Falkirk
Posts: 528

2006 Range Rover Autobiography Supercharged Zambezi Silver

[]


Not at all, the viscous fan on the SC is controlled by the ECU, there is a technical service bulletin about this very fact....I know for a fact that I experience this situation at some start ups hence how I know about it....this is highly unlikely to be a fuel pump issue....that will bring up reduced performance and the EML light. Stolen / Gone: 2006MY Supercharged LPG Autobiography - Zambezi Silver with Sand/Jet/Jet Oxford Leather.....

Post #195509 21st Jun 2013 4:21pm
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