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| How's your MAP sensor? |
| EGRs blanked & MAP sensor gunky |
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15% |
[33] |
| EGRs not blanked & MAP sensor gunky |
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62% |
[135] |
| EGRs blanked & MAP sensor clean |
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9% |
[20] |
| EGRs not blanked & MAP sensor clean |
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12% |
[27] |
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| Total Votes: 215 |
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DSL
Member Since: 11 May 2006
Location: Heading here ^^^^ :)
Posts: 24237
  
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Had a look at mine after 5k and it just had a light film of soot over it. EGRs blanked. 
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 Fri Jan 13 2012 8:14pm |
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Hedgehog
Member Since: 27 Mar 2010
Location: Frankonia
Posts: 37
 
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Thanks DSL!
I have blanked the EGRs since 4 or 5k but have not cleaned the sensor. I did it Wednesday eve. It was straight forward. There was a lot of gunk and even the air intake was full of black oily film. Out of curiosity i removed also the top of the intercooler hose to check if it´s delaminated and discovered the same messy stuff in here  Is that normal or will I get in trouble?
And what are the typical signs for the delamination of this hose?
Test drive: I am not really sure but I think it runs a little smoother and is slightly more responsive but it idles still rough even when hot.  Can that also be caused by blanking the EGRs?
Any ideas??
Hedgehog Land Rover Discovery 3
6 speed manual
Tonga Green with Alpaca
17" color coded original rims with 245/70 AT2 for offroading
19" HSE wheels with Pirelli Winter tyres
retrofitted front and rear parking aid
retrofitted 6/7 seat in Alpaca leather
retrofitted Auto-HVAC with sensors ( special thanks to MrH)
integrated AVIC-F500BT with Bluetooth, I-Pod, USB and rear camera
cruise control enabled (special thanks to wiggs)
Land Rover headrest screens
Bi-Xenons
BAS EGR blanking kit
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| Fri Jan 13 2012 10:07pm |
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loopyles
Member Since: 25 Oct 2007
Location: Northumberland
Posts: 238
 
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Took mine out and cleaned it at the beginning of the thread, fairly dirty but not as bad as some, euro 4 engine so have replaced EGRs. I have subsequently had the loss of power with no special programs 3 times since I cleaned the sensor.
Did the usual, stop and re start again, all fine for a week or so then on the 3rd occasion I took it to my local independent who are solely Land Rover and very knowledgeable, plugged in the magic box to find no pressure reading in the manifold. I told them that I had cleaned the MAP sensor, to cut a long storey short it would appear I damaged it whilst cleaning it. DO NOT POKE ANYTHING DOWN THE HOLE as there is a membrane or something inside that is part of the pressure sensor and at £138 a pop it is an expensive mistake.
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| Sat Jan 14 2012 1:09pm |
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loopyles
Member Since: 25 Oct 2007
Location: Northumberland
Posts: 238
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Just an update, it took a weeks to arrive due to Land Rovers new next day delivery system not working and they forgot to quote me VAT so £166.54 for a MAP sensor. so beware when cleaning your MAP sensor. They did fit it for free and check that I had a pressure reading in the manifold.
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| Wed Jan 18 2012 6:10pm |
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mrandmrsselby
Member Since: 04 Jul 2009
Location: Drighlington
Posts: 25
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Is this easy to do, my car seems sugglish at low speeds and pulling off from junctions, might give this a go.
07 plate with 55k miles on!
Is there a walk through guide?
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| Sun Feb 19 2012 10:33pm |
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fishinmad
Member Since: 30 Jan 2012
Location: Sotogrande
Posts: 34
 
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When I replaced battery last Friday i took the opportunity to clean the MAP sensor (following the instructions on here), as I guessed the computers would all re boot when the new battery was connected.
I had my EGR's blanked about 3 1/2 years ago but I very much doubt if they checked the MAP sensor at the same time, when I took the MAP sensor out to inspect, it looked like many of the others on here clogged with black gunge (I would post a picture but am unable to work how to do this perhaps because I am using an old Mac)....
I cleaned the MAP sensor with WD40, spraying it down the hole about 5 - 6 times until it came out clear.
Since cleaning it I have used the D3 daily for work, and also a long journey to Granada including a 2,000 metre climb to go skiing in the Sierra Nevada.
I haven't really noticed much change to the power although perhaps notice the turbo whistle a bit more, however the MPG has gone from 22.5 to 24.4 (but I did change the oil, filter and Air Filter the week before changing the battery).
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| Sun Mar 18 2012 9:39pm |
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BHH
Member Since: 19 Jan 2010
Location: Co. Antrim, N. Ireland
Posts: 166
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| Re: Go and clean you MAP Sensor NOW!!! |
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DSL wrote:If you've cleaned your MAP sensor how's it looking?? Pics please. Here's a starter for 10 in case you've not been following the ESF thread.
Has it made any difference if you've had high mpg & sluggish performance?
Instructions on how to do (at your own risk as non techie) here. http://www.disco3.co.uk/forum/topic63478-45.html
Edit Title changed as per suggestion. 
Any chance of reposting with pics again? 
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| Mon Apr 16 2012 9:18am |
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DSL
Member Since: 11 May 2006
Location: Heading here ^^^^ :)
Posts: 24237
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Done, found them on the phone. Original directory got deleted a while ago, forgot these were on there. 
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| Mon Apr 16 2012 9:47am |
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