Member Since: 10 Mar 2007
Location: Devizes, Wiltshire
Posts: 576
Took mine out this evening:
Click image to enlarge
Click image to enlarge
Not a lot, but nonetheless I want to say it made a difference when I took it for a quick spin. Am I imagining that the hesitation was not there?
Will not commit to that until I have driven it for a few days.
Got to say it has been running smoother on the 20" since I put them on. So probably that is all it is.
Many thank for bringing this to our attention.
Did have a look at where those EGR thingies might be hiding. Not sure if this is a job I fancy tackling.
Best regards
Chris
Admin note: this post has had its images recovered from a money grabbing photo hosting site and reinstated
26th Apr 2011 5:25 pm
Barry C-All
Member Since: 13 Nov 2008
Location: Essex
Posts: 169
I would like to suggest with regard to whether the MAP sensor hole is blocked, partly blocked or clear, if it is blocked, the vehicle will show an engine system failure, and will lose power to be almost undriveable; but, if it is sludged up, but the hole is still apparently clear to some extent, then the engine will still run fairly well. However, may I suggest that inside the sensor is a diaphragm connected to electronics, that flexes under turbo pressure, and I expect that the diaphragm doesn't move much more than a couple of thou. at the most, and that any build up of sludge/gung could impair or restrict the movement and therefore affect the signal sent to the ECU. Cleaning the sensor out, even when the hole looks reasonably clear, could give the diaphragm more room to flex, and therefore send the unimpaired /better signals to the ECU. This is just a theory, and I am assuming there is a diaphragm in the Map sensor.
26th Apr 2011 6:24 pm
cold_n_wet
Member Since: 05 May 2009
Location: Bergen
Posts: 1509
Before
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After
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IDTOOL PRO / Faultmate programing and BAS remaping services in Norway.
Diagnostic for most Land rover vehicles
Land Rover parts and accessories.
Stockist of RLD equipment.
www.praesto4x4.no
D4 gone, missed but replaced with a 110 Puma.
26th Apr 2011 6:45 pm
C6REW
Member Since: 10 Mar 2007
Location: Devizes, Wiltshire
Posts: 576
Barry C-All wrote:
I would like to suggest with regard to whether the MAP sensor hole is blocked, partly blocked or clear, if it is blocked, the vehicle will show an engine system failure, and will lose power to be almost undriveable; but, if it is sludged up, but the hole is still apparently clear to some extent, then the engine will still run fairly well. However, may I suggest that inside the sensor is a diaphragm connected to electronics, that flexes under turbo pressure, and I expect that the diaphragm doesn't move much more than a couple of thou. at the most, and that any build up of sludge/gung could impair or restrict the movement and therefore affect the signal sent to the ECU. Cleaning the sensor out, even when the hole looks reasonably clear, could give the diaphragm more room to flex, and therefore send the unimpaired /better signals to the ECU. This is just a theory, and I am assuming there is a diaphragm in the Map sensor.
If it is measuring pressure then there has to be a diaphragm which is probably referenced to atmospheric pressure.
Regards
Chris
26th Apr 2011 6:46 pm
dasdais
Member Since: 03 May 2010
Location: sussex
Posts: 73
hope fully my new sensor comes tomorrow if factory got one. Land Rover advised very common issues the problems I have got since cleaning the sensor.
Be advised £149.39 inc. VAT!!!
27th Apr 2011 8:11 am
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 73075
Remember for any parts ask for your Alegence discount if your car is over 3 yrs. Don't ask = don't get! TLO's da man for these, he's braced and ready for impact!
27th Apr 2011 8:36 am
Archeci
Member Since: 17 Jul 2009
Location: East Yorkshire
Posts: 558
I have just read this, the better half is out in the car today so I will give it a try tomorrow. Ours is a 2005 '55' with 79,000 miles and still has EGR's (not the original ones mind!).
LeeTonga Green TDV6 S
Remember laughing or smiling confuses the management.
27th Apr 2011 9:31 am
kariylit
Member Since: 01 Jun 2008
Location: Finland
Posts: 49
Cleaned mine yesterday and here is how it looked before. Hard to say yet effect to fuel economy but at least it looks it fixed rough idle problem.
Click image to enlarge
Thanks for good tip!
Kari
28th Apr 2011 9:31 am
Donald
Member Since: 15 May 2007
Location: Inverness
Posts: 188
Had a look at mine tonight - absolutely spotless! what is it doing different to all you guys?Chipped, K&N, tow pack, AT2's, Mantec, fridge in boot, invertor, Garmin, laptop/Memory Map, Optima yellow top, Traxide Kit, Phillips Extreme bulbs
28th Apr 2011 6:21 pm
Dan_NL
Member Since: 19 Sep 2010
Location: world
Posts: 1213
Donald ; is it because you run it on single malt ?? ''
28th Apr 2011 7:37 pm
AN
Member Since: 26 Jul 2005
Location: Hungary
Posts: 327
Derek,
Thanks, great tip. Mine was totaly covered, the hole was full of sod, had to use a very small screwdriver to clean it. The fuel consumption improved by around 8%, I just had a run on the highway (50 miles trip, avg speed 60 mph, majority was 80 mph) and the fuel consumption was 28mpg.
pulled mine out this aft it looked about average to most of the pics i have seen. gave it a good clean see what happens tomorrow going to cleethorpes about 65miles. about 9month ago both egr valves were changed they were full of crud so i pulled of the air intake and sprayed a full tin of 10k boost into it so it would clean out the system what a differance that made to the engines running "a lot smoother" was told to use 10k boost every 12mth or 10,000 miles got it from halfords does wot it says on the tin always up to somert usualy no good acording to swmbo
2nd May 2011 3:40 pm
azurar01
Member Since: 24 Feb 2011
Location: Gloucestershire
Posts: 509
Hi Steve, which bit of the air intake did you spray into ?
Ignore re read your post D4 SDV6 HSE 11MY - Gone
D3 TDV6 HSE 08MY - Gone
Last edited by azurar01 on 3rd May 2011 5:35 pm. Edited 1 time in total
3rd May 2011 9:56 am
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 73075
Just changed my sensor, after 1500 miles since cleaning the old one had a coating of oil already. Looks like a clean every few thousand miles is needed. New sensor in and everything ticketyboo. Was going to keep the old sensor as a spare but ended up slamming the bonnet on it so maybe not!
3rd May 2011 10:03 am
Splitpin
Member Since: 30 Dec 2010
Location: At the toolbox
Posts: 535
Just checked mine when blanking EGRs and it was solid, no sign on the hole!!
Quick wash off with some carb cleaner and its running sweet, does anyone know the live data pressure reading it should be giving?
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