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engine lacking ooomph - What could it be?
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Bodsy
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Member Since: 06 Nov 2006
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Posts: 21361

United Kingdom 2007 Discovery 3 TDV6 HSE Auto Java BlackDiscovery 3
engine lacking ooomph - What could it be?

OK, so for some considerable time, maybe 18 months or even more, I've felt that the disco is lacking in power.

I'm not talking EGR failure no power, but an overall lack of power compared to how I believe it should be.
I've put this down for a long time, just to my changing perception of the car.

So this lack of power is not at take off, not EGR and I don't believe is a turbo issue.

Fuel filter is fresh and Genuine, Air filter is fresh and clean.

There are no specific recurring faults other than my Alarm Sounder (unplugged) and lights circuit (LEDS)

It's not like it accelerates and then hits a dead spot and carries on, when you get to fourth/fifth/sixth gear, when you reach a hill, you definitely have to drop it down a gear or two in order to make it up. I'm sure I used to be able to accelerate up any hill when I first got the car.

now it appears that I can accelerate up to around 50 -60 up a steep hill, 4k revs but not enough power to keep accelerating and change to next gear.

There are no obvious fuel leaks and no specific dead spots as such, just what I'm perceiving to be a lack of power overall. This makes it interesting when towing the caravan as well, whereas before, I have accelerated up steep hills in the lakes with 3.5t large trailer on the back without tooo much problem.

Live values of injectors at idle (is that the best measure?) show
    Reading 1 Reading 2
    1 980.317 - 967.899
    2 999.050 - 997.524
    3 1051.680 - 1036.150
    4 1021.566 - 1040.422
    5 973.269 - 968.418
    6 977.174 - 987.609


RPM was 748/751 and Ambient Temp was 2degrees.

My previous understanding was that those values all look within the normal range.

I was thinking injectors, but without faults occurring it's difficult to tell if I'm going in the right or wrong direction?

Any ideas or other things to test/check?
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Post #14377135th Mar 2015 2:12 pm
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Disco_Mikey
 


Member Since: 29 May 2007
Location: Dundee, Scotland
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Scotland 2005 Discovery 3 TDV6 HSE Auto Cairns BlueDiscovery 3

MAF readings Thumbs Up

Compare them to a known good car
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Post #14377345th Mar 2015 2:45 pm
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Bodsy
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United Kingdom 2007 Discovery 3 TDV6 HSE Auto Java BlackDiscovery 3

Will do. Thumbs Up On acceleration or normal idle?
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Post #14377435th Mar 2015 3:00 pm
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Robbie
 


Member Since: 05 Feb 2006
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United Kingdom 2013 Discovery 4 3.0 SDV6 HSE Auto Baltic BlueDiscovery 4

Idle, snap throttle, idle.
 Land Rover - Turning Drivers into Mechanics Since 1948

Battery & Quiescent Current Drain Testing

Diagnostics for:
Defender, FL2, D3, D4, Evoque, RRS & FFRR
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Post #14377505th Mar 2015 3:12 pm
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Bodsy
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Member Since: 06 Nov 2006
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Posts: 21361

United Kingdom 2007 Discovery 3 TDV6 HSE Auto Java BlackDiscovery 3

Thumbs Up Thumbs Up
 Bodsys Brake Bible

D4/D3 Remote FBH heat kits
BAS Remaps/ EGR Blank
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Post #14377525th Mar 2015 3:13 pm
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yogi972
 


Member Since: 05 Jun 2011
Location: Kineton
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United Kingdom 2010 Discovery 4 3.0 TDV6 HSE Auto Alaska WhiteDiscovery 4

Ian, I fear youve had this feeling since driving Ol YOG approx 18months ago!! Laughing

Did you ever get that remap? Whistle
  
Post #14377585th Mar 2015 3:21 pm
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Bodsy
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United Kingdom 2007 Discovery 3 TDV6 HSE Auto Java BlackDiscovery 3

No, left it as standard. And you're right, Ol Yog certainly can go! Thumbs Up
 Bodsys Brake Bible

D4/D3 Remote FBH heat kits
BAS Remaps/ EGR Blank
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Post #14377595th Mar 2015 3:23 pm
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Bodsy
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Member Since: 06 Nov 2006
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Posts: 21361

United Kingdom 2007 Discovery 3 TDV6 HSE Auto Java BlackDiscovery 3

Map and maf rpm and injector pressure


 Bodsys Brake Bible

D4/D3 Remote FBH heat kits
BAS Remaps/ EGR Blank
Transmission Flush
Software updates/enabling


Clock/ SNOTM /3Flash / 4x4Info /BT Update /Service Reset/Error Codes / Gearbox Reset
See It Here 
 
Post #14378485th Mar 2015 5:53 pm
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Gareth
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When did you last clean out the intercooler? Not only could it be clogged with mud externally, but it could also be blocked internally. ISTR that I once flushed my buddys D1 300tdi intercooler with something called Genklene (sp?) and it made a world of difference to the car.
  
Post #14378525th Mar 2015 5:58 pm
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Robbie
 


Member Since: 05 Feb 2006
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United Kingdom 2013 Discovery 4 3.0 SDV6 HSE Auto Baltic BlueDiscovery 4

Any chance you have got heavier?
 Land Rover - Turning Drivers into Mechanics Since 1948

Battery & Quiescent Current Drain Testing

Diagnostics for:
Defender, FL2, D3, D4, Evoque, RRS & FFRR
A not-for-profit enterprise


 
 
Post #14378575th Mar 2015 6:05 pm
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Bodsy
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Member Since: 06 Nov 2006
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United Kingdom 2007 Discovery 3 TDV6 HSE Auto Java BlackDiscovery 3

Replaced intercooler and radiator last year. Only muddy water I've been through (other than normal road crud) was Salisbury in December but it was the same before then. Might benefit a little from cleaning but I don't think will be noticeable. Something for the weekend as well though. Thumbs Up
 Bodsys Brake Bible

D4/D3 Remote FBH heat kits
BAS Remaps/ EGR Blank
Transmission Flush
Software updates/enabling


Clock/ SNOTM /3Flash / 4x4Info /BT Update /Service Reset/Error Codes / Gearbox Reset
See It Here 
 
Post #14378585th Mar 2015 6:06 pm
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Gareth
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Member Since: 07 Dec 2004
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United Kingdom 

Maybe your perception of the car has come to expect too much?

I often find this in my work, which is supplying computer systems. We often get support calls saying "its getting slow, can you come and clear it out" When in fact, the user has got used to the system, and instinctively knows what to do to operate it, therefore is trying to make it go faster. The system is actually going at the same speed as when it was first installed, but the user has speeded up in their day to day use of it.

I think a drag race is called for..... Call Top Gear!!
  
Post #14378705th Mar 2015 6:22 pm
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Disco_Mikey
 


Member Since: 29 May 2007
Location: Dundee, Scotland
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Scotland 2005 Discovery 3 TDV6 HSE Auto Cairns BlueDiscovery 3

I'm up for a D3/D4 drag race Whistle Thumbs Up

I always think mine could do with a little more power, until I drive a standard one again Mr. Green
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Post #14378805th Mar 2015 6:29 pm
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Bodsy
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Member Since: 06 Nov 2006
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United Kingdom 2007 Discovery 3 TDV6 HSE Auto Java BlackDiscovery 3

Robbie wrote:
Any chance you have got heavier?

Every chance Laughing

I'll swap cars with one of the guys at the Mids meet on Monday and see how it all compares.
 Bodsys Brake Bible

D4/D3 Remote FBH heat kits
BAS Remaps/ EGR Blank
Transmission Flush
Software updates/enabling


Clock/ SNOTM /3Flash / 4x4Info /BT Update /Service Reset/Error Codes / Gearbox Reset
See It Here 
 
Post #14379055th Mar 2015 7:10 pm
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DerbyshireDisco
 


Member Since: 12 Mar 2012
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England 2013 Discovery 4 3.0 SDV6 HSE Auto Loire BlueDiscovery 4

That must be a first Bodsy asking for help, he's usually one of the first to offer assistance and his consideral knowledge to other folks.
Hope you get it sorted soon Ian.
 Displaced Yorkshireman.
=^:^=
SDV6 Auto obviously, Loire blue/Ebony, ugly kid glass, RLD wheel protector, private plate and maybe side steps. 
 
Post #14379655th Mar 2015 8:13 pm
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