Member Since: 29 May 2007
Location: wiggleigh bottom
Posts: 1112
you can check without motor running using a barometer and an elm327 device. without the motor running, should read current atmospheric pressure on the barometer. could even predict the weather There's one wheel on my wagon, but i'm still rollin' along, it's the cherokee, they're after me, but I'm singing a happy song
3rd May 2011 10:25 pm
Splitpin
Member Since: 30 Dec 2010
Location: At the toolbox
Posts: 535
I have a snap on diagnostic machine so I can read all the info but each car differs.
The minimum, at idle should be atmosphere - the reader I used yesterday on my new sensor (Dealer replaced to solve ESF - didn't work - but another story!) was reading about 997kPa at idle - didn't check it under load - but when I did it with the old sensor, I saw it got to about 2400kPa.
If you know the max boost of the turbo, you can work out the max pressure.
I don't think you need to go mad cleaning the sensor - it's only when the carp gets into the hole that seems to cause a problem - and that would appear to take months/years - unless there is another problem.Mark.
2006, D3 SE Auto - gone but not forgotten.
2014 BMW 530d M Sport Tourer.
1977 Triumph Spitfire 1500
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4th May 2011 6:32 am
Splitpin
Member Since: 30 Dec 2010
Location: At the toolbox
Posts: 535
That's about the same numbers as I'm getting, mine was so bad the hole was not present!
It's bad enough having egrs but why fire their output directly at the map sensor??!
4th May 2011 6:40 am
er1c
Member Since: 24 Jan 2011
Location: New York
Posts: 183
Is it just the TD's that have EGR w/ MAP sensors? Or do the petrol D3s have them, too? I haven't been able to find anything mentioned about EGR/MAP on any of the American-LR3 sites. Long Ranger aux fuel tank, Traxide w/ yellow top battery, Sasquatch rods, G4 tail guards, GVIF 6.2, CarPC (Dual-Core Atom D525, 64GB SSD, 4GB DDR3 & M3-ATX 125W PSU, Win7 Pro 64 w/ Centrafuse 3.5), Yaesu FT-8900R ham radio w/ Comet CA-2x4SR, reverse CCD camera, RLD laptop seat mount, RLD roof antenna mount, Viair 400P compressor, 3K xenons, 2.5K halogen fogs, Series 3 mudflaps, 1.25" Wheel Spacers (Motorsport Tech), Baja Roof Rack
4th May 2011 12:57 pm
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 73135
Don't think V8s have EGRs but petrol engines (in general) can have MAP sensors, don't know whether LR ones do.
4th May 2011 1:47 pm
Chicken Duck
Member Since: 11 Nov 2009
Location: Italy
Posts: 1387
Mine's only done 23000 and up till last 300 miles not had EGR's blanked. Most of the milage were short slow journeys so engine never went above 2000 revs. Sorry for poor pic but the sensor was well and truely bunged up. Shocking . Not had time to test drive it yet
Member Since: 07 Aug 2010
Location: kent
Posts: 209
sensor
mine had a service last week(main dealer)happy enough with the price etc,but checked my sensor today and it was a bit mucky,not as bad as some seen here but surprised for the sake of one screw they did not check it still clean now and back in. s/steel side tubes,door trims with bright inlay,front and rear light guards,half chrome mirror caps,mud flaps,chrome finishers on boot and rear bumper step,chrome finishers round gear shift and cup holders,chrome door handle covers.d/4 grille conversion,chrome foglamp bezzells,parrot bluetooth.***sadly missed**********
5th May 2011 4:29 pm
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 73135
If it's not on the list it doesn't get done, and cleaning the MAP sensor isn't on any list AFAIK.
5th May 2011 4:34 pm
iconix
Member Since: 19 Nov 2006
Location: Oakley, Hampshire
Posts: 938
'08 year 39000 miles, mostly town driving. Like Woody32 I have 22.9 mpg - looking forward to see if that gets any better
Good tip Derek
Click image to enlarge
5th May 2011 5:15 pm
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 73135
Bit of a weird one Sports Fans but once MAP sensor was cleaned mojo was back! Got remap reapplied and mojo went! Did 900 miles and mpg was down by 10% or so for known use, also needed a lot more throttle to get it moving initially, though once moving it was sweet. Then changed the MAP sensor for the new one (thanks Saint Nick!!) and mojo was back. Not just me, used SWMBO as a guinea pig and her conclusions were same as mine. I know weird with a capital weee but there ya go.
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. Not had time to test drive it yet
still clean now and back in. 
Got remap reapplied and mojo went! 
Did 900 miles and mpg was down by 10% or so for known use, also needed a lot more throttle to get it moving initially, though once moving it was sweet. Then changed the MAP sensor for the new one (thanks Saint Nick!!) and mojo was back. 
