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marky777



Member Since: 05 Mar 2015
Location: Christchurch
Posts: 141

United Kingdom 2005 Range Rover Autobiography 4.4 V8 Bonatti Grey
4 mpg on the onboard constant mpg display??

I have noticed that the onboard mpg constant display has gone from its usual 17mpg reading to 14mpg, then 10mpg followed by 6.9 to 4 today. It seems to be getting progressively worse over the last three days. I assume i should take the trip computers reading with a large grain of salt . However the car seemed very unresponsive today with regards of acceleration ( 2005 ajv8 4.4), i had to use the accelerator as opposed to the normal waft of power and also when coming off power its stops quick as if a brake is on.

It has just had new pads front and rear and a fresh mot. I have also noticed if put into drive and allowed to creep forward, pulling the handbrake only dips one side of the rear end.

I hope its only a seized caliper? Does the handbrake operate an internal drum type brake on the inside of the disc?

Any advice most appreciated Thumbs Up

Post #321133 3rd Apr 2015 5:41pm
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stan
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something wrong with the brakes..any heat from them after a run? ... - .- -.




Y. O. L. O.
.

Post #321135 3rd Apr 2015 5:48pm
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TugRR



Member Since: 11 Jan 2011
Location: Bakewell
Posts: 1199

United Kingdom 

Sweepstake time !

My money is on the ROS caliper - both my previous 06 MY FF's had it. The second (a petrol . . .), on a drive from Portsmouth to Derbyshire through the night. Average ? 9mpg Shocked

Thumbs Up Where do you go after one of these . . . ?

Post #321136 3rd Apr 2015 6:00pm
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marky777



Member Since: 05 Mar 2015
Location: Christchurch
Posts: 141

United Kingdom 2005 Range Rover Autobiography 4.4 V8 Bonatti Grey

Hi Stan, the last few days have only done a 2 mile run each day and no heat in any of the discs or abnormal brake dust on wheels. I am worried that a long run could end up frying discs/pads/caliper seals/calipers or worse putting undue strees on the engine.

It might be worth noting that the car has just had a recon box from grays transmissions and a new tc. Hopefully nothing wrong with these items and no dash warnings have come up.

Post #321137 3rd Apr 2015 6:04pm
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stan
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if you can jack up each wheel and see if you can turn it easily, make sure its in neutral with engine off. ... - .- -.




Y. O. L. O.
.

Post #321138 3rd Apr 2015 6:05pm
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marky777



Member Since: 05 Mar 2015
Location: Christchurch
Posts: 141

United Kingdom 2005 Range Rover Autobiography 4.4 V8 Bonatti Grey

Will jack it up in the morning but will have to use my trolley jack as the handle snapped on the LR one last week when the new wheels went on Embarassed

Post #321139 3rd Apr 2015 6:14pm
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markcaughey



Member Since: 03 Nov 2014
Location: Glasgow
Posts: 316

Scotland 2006 Range Rover Vogue 4.4 V8 Buckingham Blue

Tug RR Took the word's out my mouth. I felt some heat coming from the ROS disc earlier this week so decided it was time to get the new callipers built up and fitted. Done both sides to be safe. Handy that having a shelf full of goodies from previous owner need to get the new handles fitted soon Mr. Green

Ps cars going great still love it. Have you not caught the bug for another one yet ? Range Rover Vogue 2006 4.4 AJV8 | Buckingham Blue | Parchment Leather | Supercharged Grill+Side Vents | CA02 HEY ( NOT 02 PLATE )

Post #321140 3rd Apr 2015 6:21pm
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marky777



Member Since: 05 Mar 2015
Location: Christchurch
Posts: 141

United Kingdom 2005 Range Rover Autobiography 4.4 V8 Bonatti Grey

Thanks for the advice, will get it jacked up in the morning. I have a RAC warranty with the car......does anyone know if it would cover a brake failure like this?

Has anyone any experience with RAC warranties?

Post #321143 3rd Apr 2015 6:53pm
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markcaughey



Member Since: 03 Nov 2014
Location: Glasgow
Posts: 316

Scotland 2006 Range Rover Vogue 4.4 V8 Buckingham Blue

Unsure of RAC warranties etc. Also check for excessive brake dust on the rear wheels. I would certainly say a new calliper will see it right ( £70 euro car parts ) . would advise to change both rears as it only a matter of time before the other side goes. Range Rover Vogue 2006 4.4 AJV8 | Buckingham Blue | Parchment Leather | Supercharged Grill+Side Vents | CA02 HEY ( NOT 02 PLATE )

Post #321144 3rd Apr 2015 7:04pm
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marky777



Member Since: 05 Mar 2015
Location: Christchurch
Posts: 141

United Kingdom 2005 Range Rover Autobiography 4.4 V8 Bonatti Grey

Have now used two full tanks of fuel, sadly the consumption is putting me at 10.9 mpg. If not mentioned before all levels (enginge) are fine with no untoward smoke/overheating etc. It takes about 10 mins or so to get to temperature with the gauge dead level pointing to the sky. I also put it into my local indy to check for binding of brakes as suggested and they reported free running on all corners. The only change to the car since purchase on the drive train side is the larger wheels, but to drop 7 mpg from normal on eagle f1's seems daft to me.

Thinking of putting it into my local MD as with only 80k on the clock and a new box it should return decent mpg

as usual thanks in advance for any suggestions Thumbs Up

Post #332826 16th Jun 2015 8:51pm
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Andy_J



Member Since: 14 Nov 2011
Location: Muir of Ord
Posts: 479

Scotland 2007 Range Rover Vogue SE TDV8 Java Black

Could be a lambda sensor on its way out or MAF. Not sure if these would give and engine management light 56 TDV8 Vogue SE
9 Freelanders, 2x 2002 TD4ES, 2001 TD4, 2002 1.8GS, 2000 XEDI, 2x 2000 1.8ES, 2004 1.8 & 2000 1.8 GS (rolled)
91 Lotus Carlton (sold)
90 Lotus Elan (BRG)

Post #332916 17th Jun 2015 12:45pm
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Zirconblue



Member Since: 16 Apr 2015
Location: Kent
Posts: 1277

United Kingdom 2005 Range Rover Vogue 4.4 V8 Cairns Blue

If it's just had new brake pads front and rear, then you would think who ever fitted them would have noticed a seized caliper?

The handbrake has internal shoes i think, if one of those is dragging it would do it.

Are the tyre pressures correct? I noticed mine is very sensitive to a tyre being slightly down.

Post #332931 17th Jun 2015 1:19pm
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Dolphinboy



Member Since: 07 Dec 2009
Location: Bristol
Posts: 3142

United Kingdom 2015 Range Rover Autobiography SDV8 Baltic Blue

I reckon MAF. It will over fuel to compensate and will show EML for rich running. Hence lower MPG.

Post #332940 17th Jun 2015 1:47pm
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marky777



Member Since: 05 Mar 2015
Location: Christchurch
Posts: 141

United Kingdom 2005 Range Rover Autobiography 4.4 V8 Bonatti Grey

Hi, thanks for the replies guy's. I have not checked the tyre pressures but will in the morning. It is not showing any faults on the speedo binacle, what does EML stand for and do i need to take it to my MD for a diagnosis of this possible maf problem on their fault reader?

Many thanks mark Thumbs Up

Also does anyone know the correct tyre pressures for the style 5 l405 wheels i have (275/45/21) ?

Post #332949 17th Jun 2015 2:43pm
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Zirconblue



Member Since: 16 Apr 2015
Location: Kent
Posts: 1277

United Kingdom 2005 Range Rover Vogue 4.4 V8 Cairns Blue

EML = Engine malfunction lamp.

Post #332968 17th Jun 2015 4:40pm
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