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Go and clean your MAP Sensor NOW!!!
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How's your MAP sensor?
EGRs blanked & MAP sensor gunky
12%
 12%  [75]
EGRs not blanked & MAP sensor gunky
60%
 60%  [352]
EGRs blanked & MAP sensor clean
13%
 13%  [80]
EGRs not blanked & MAP sensor clean
13%
 13%  [76]
Total Votes: 583

euangibson
 


Member Since: 24 Dec 2010
Location: Borders
Posts: 11027

Scotland 2012 Discovery 4 3.0 SDV6 HSE Auto Firenze RedDiscovery 4

jsamuelson wrote:


Something about this forum inclines you to fiddle.



I think I only opened the bonnet to fill the washer bottle B4 i got into this site......the advice,tips and expertise which people are willing to share is invaluable....... Thumbs Up
 "Better to remain silent and be thought a fool,than to speak out and remove all doubt" ?.....what rubbish...

Locking rear E-diff
RLD spare wheel protector & sump guard
Extended roof rails
Series 111 mudflaps
Black side tubes,grill and vents
Timed climate remote
Hids4u interior lights

D4 Firenze my2012 HSE
D3 Java 2005 SE manual (sold,sadly,thanks for the memories)
1966 '88 Series 2a....still starts in the morning better than I do... 
 
Post #78950325th Apr 2011 5:50 pm
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Phil1644
 


Member Since: 14 Nov 2009
Location: Probably still in work!
Posts: 303

United Kingdom 2006 Discovery 3 TDV6 Base 7 Seat Manual Zambezi SilverDiscovery 3

Cleaned mine last Wednesday before setting off on 450 mile motorway round trip with the Tintent on the back. Was stunned to find it pulled 6th gear (manual) easily with the van on the back, in fact I had to keep conciously backing off the throttle as the car kept running up to 65 and beyond. Trip computer has shown around 25mpg which is better than normal. We did leave the dog at home, but I doubt he accounts for the difference.... Mr. Green
  
Post #78950525th Apr 2011 5:55 pm
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henry-john
 


Member Since: 22 Feb 2011
Location: Belgium
Posts: 337

2008 Discovery 3 TDV6 HSE Auto Unknown ColourDiscovery 3

cleaned mine, noticed nothing afterwards....

may all be in my head Razz

was an easy job Smile
  
Post #78950625th Apr 2011 5:57 pm
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UKDen
 


Member Since: 01 Nov 2007
Location: Northumberland
Posts: 66

United Kingdom 2007 Discovery 3 TDV6 XS Manual Tonga GreenDiscovery 3

37,000 miles. EGRs replaced at 22,000 & 29,000 miles.

Not too dirty IMO.

http://www.disco3.co.uk/gallery/displayima...&pos=0

Have placed the above link to a photo, cos I don't know how to embed it in this message Embarassed
  
Post #78951625th Apr 2011 6:17 pm
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MacLeod 313
 


Member Since: 18 Apr 2008
Location: away
Posts: 10723

Scotland 2006 Discovery 3 TDV6 HSE Auto Zambezi SilverDiscovery 3

Go back to your gallery, under the Pic you'll see a BB code, copy and Paste that to your reply

Yours aint too dirty though (see below)

Click image to enlarge
  
Post #78952325th Apr 2011 6:59 pm
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jsamuelson
 


Member Since: 07 Feb 2011
Location: Cornwall
Posts: 214

United Kingdom 2009 Discovery 3 TDV6 HSE Auto Santorini BlackDiscovery 3

euangibson wrote:
jsamuelson wrote:


Something about this forum inclines you to fiddle.



I think I only opened the bonnet to fill the washer bottle B4 i got into this site......the advice,tips and expertise which people are willing to share is invaluable....... Thumbs Up


Agree! Great forum. Thumbs Up

Just got back from a half-hour drive, assuming the trip computer is equally wrong before and after, showed almost a 4 mpg increase over what I'd usually get…we'll see how that levels out over the week.

And, unscientifically, the engine feels smoother, pick-up seems a bit better and it seems to hold in gear for longer.

All good!
  
Post #78952825th Apr 2011 7:09 pm
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DSL
Keeper of the wheelie bin 


Member Since: 11 May 2006
Location: Off again! :-)
Posts: 72911

Ukraine 

Sounds good! Thumbs Up
   
Post #78953925th Apr 2011 7:50 pm
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discoBizz
 


Member Since: 20 Sep 2008
Location: Manchester
Posts: 1416

United Kingdom 2008 Discovery 3 TDV6 HSE Auto Tonga GreenDiscovery 3

420 miles, 9 mpg improvement (car display) Shocked Shocked

(I have changed my driving style too to a more "economical" one, but no way it's that fact alone!)

In any case, it seems clear to me from all the posts here there must be a real benefit, can't all be having the same placebo effect (if so, we should start a threat labeled "The Economy is doing well, go clean your news providers NOW!" and talk our way into optimism Laughing )
 ==> Guide - Inexpensive AV Modification
==> Guide - Extend the multimedia of your Discovery III (September 2011, v1.2 uploaded)  
Post #78964926th Apr 2011 5:45 am
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reitsma
 


Member Since: 03 Feb 2011
Location: skien
Posts: 138

Norway 2005 Discovery 3 TDV6 Base 7 Seat Auto Zambezi SilverDiscovery 3

Have been driving a bit, only for short periods, but it 'feels' more agile, picks up better and a bit faster (have a BAS remap). Just imagination..?

Cannot say about improved MPG before driving a longer period but keep my fingers crossed.
 www.skienklinikk.no  
Post #78966426th Apr 2011 8:33 am
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irishrover
 


Member Since: 18 Aug 2008
Location: The Treaty County
Posts: 361

Ireland 2007 Discovery 3 TDV6 Metropolis LE Manual Java BlackDiscovery 3

Morning,

my 07 Disco had its 105k service last week so when i got home on saturday i cleaned the sensor. both my EGR's were replaced twice but dont ever think the MAP sensor was cleaned. the nop of the nozzle was free from obstructing gunk but the sides were very black and gunky. used kitchen towel and wet cotton buds to clean it.

Click image to enlarge


the kitchen towel and cotton buds after:

Click image to enlarge


filled up afterwards on saturday and as a rule i normally get 240 odd km's from first 1/4 of a tank, nothing changed on sunday when i did a 300km drive regarding consumption and/or indeed pick-up/power,

Ian.
 07 Discovery 3 TDV6 Commercial (Java Black) with:

Gone but not forgotten. 
 
Post #78966626th Apr 2011 8:37 am
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C6REW
 


Member Since: 10 Mar 2007
Location: Devizes, Wiltshire
Posts: 576

United Kingdom 2006 Discovery 3 TDV6 HSE Manual Java BlackDiscovery 3

Some great information here.

So this is another job for me to tackle one evening this week. Would be interesting to see what my 06 with 86k on the clock is like.

Problem is I have no idea about the EGR's. I have searched the site and can find no information on what you do to replace them, only to buy a kit from BAS. Many different questions about EGR's on the forum, but guess the replacement/blanking thread is hidden somewhere.

Has this helped with the delay when putting your foot down from a stand still? Or in my absence over the last couple of years have you technical bods found a different solution to this problem, which Land Rover still denies?

Best regards

Chris
  
Post #78967126th Apr 2011 9:07 am
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chalky
 


Member Since: 22 Aug 2008
Location: Yorkshire
Posts: 3145

England 2007 Discovery 3 TDV6 XS Manual Tonga GreenDiscovery 3

I wonder if the lack of noticeable driveability and that some have not seen an increase in consumption is in some part down to the MAP sensor being faulty ?

Just a thought ?

As the Mrs drove mine a bit over the Bank Holiday and asked if i'd had something done to the car Whistle

even she noticed !
  
Post #78967226th Apr 2011 9:10 am
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DSL
Keeper of the wheelie bin 


Member Since: 11 May 2006
Location: Off again! :-)
Posts: 72911

Ukraine 

My car's get up & go is back after cleaning but changing the MAP sensor anyway. In the grand scheme of things it's small potatoes compared with the small fortune spent on trying to fix these problems. Smile

Unfortunately SWMBO hasn't noticed the change as she's refusing to drive it until we're sure it's shutting down habit is properly fixed.
   
Post #78968026th Apr 2011 9:44 am
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Dan_NL
 


Member Since: 19 Sep 2010
Location: world
Posts: 1213


I think that as long as the opening isn't blocked it functions. So all the gunk of the world can be on it, as long as it can sense the pressure correctly... What I wonder about : how accurate are these devices. I have seen temperature sensors for [domestic] heatpumps which were 2K off the proper reading and also died within a few years... So what if the sensor reads eg 30psi [don't have a clue what this value should be..], but actual pressure is 35psi... So you have an extra lean mixture ?? The other way around : measures 35psi but factual value is 30psi.. To rich mixture and high concumption ?!! Who can say anything sensible about this ? Which make are these things and what are their manufacturing tolerances???
  
Post #78968326th Apr 2011 9:49 am
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DSL
Keeper of the wheelie bin 


Member Since: 11 May 2006
Location: Off again! :-)
Posts: 72911

Ukraine 

Dan_NL wrote:
I think that as long as the opening isn't blocked it functions. So all the gunk of the world can be on it, as long as it can sense the pressure correctly...


Agreed were it not the case in reality, which I don't understand. Pre cleaning my car was a complete dog. Took it for a spin then cleaned it and took it out immediately after and it was a completely different car. Pre clean mpg dire, post clean it was back to normal. I don't understand why as the hole was not blocked, I shouldn't have seen a difference. Could it be the gunk around the sensor disturbs the air flow to affect the reading, don't know but deffo car back to normal. Only question is why didn't I think of the MAP back in October? Mind you with a goosed turbo I wouldn't have seen the change.

Now I've got this fixed the alternator is now playing up! Big Cry Big Cry
   
Post #78968926th Apr 2011 10:01 am
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