Member Since: 14 May 2012
Location: Ellikom
Posts: 232
Pressure not checked yet, already more errors came up:
DPF full: P244B Diesel particulate filter differential pressure too high (Bank 1)
Stopped, put transmission in P and floored the accelerator, fault gone for now.
Little later P0087: P0087 Fuel rail/system pressure - too low
Comes back to the HPFP I suppose....2017-...: Disco II Td5 auto, 1999, BAS remap, HD TC and auto box Ashcroft, Allisport IC, ACE, 2" lift only coils, BF goodrich KM2 265/70R17, FF front and rear bumper, TF steering guard and tree sliders, nanocom.
2013-2017: Disco 3 TDV6 HSE aut. of 2008, Britpart treesliders, IIDTool, RLD sump guard, BFG KM2 265/70R17, adj. rods, BAS remap + EGRs blanked, silicon IC hoses.
2010-2013: Disco II Td5 of 2000, ACE, front Bearmach HD coils, rear SLS, GG AT2
16th May 2015 11:24 am
Robbie
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932
Never spend money on the HPFP until the LP fuel pressure is checked with a proper gauge.
I've seen a lot of LP issues, but yet to see a genuine HP issue outside of misfuel events.
Land Rover - Turning Drivers into Mechanics Since 1948
Mine was a genuine HP fault Robbie - took 9months to finally get it sorted as it only went into limp mode under certain conditions - temperature, throttle position - initially, but as it developed I could get it to limp on demand (But 90% of the time at 2000rpm)
I'd contacted LR technical via a colleague at work who diagnosed the HP pump being at fault some 6months prior to the dealer finally exhausting all other options and replacing the HP pump - which did sort my ESF's.
I'd also been talking to Pete Bell about it and the reasons behind the 2000rpm point because mine has been remapped by Pete.Mark.
2006, D3 SE Auto - gone but not forgotten.
2014 BMW 530d M Sport Tourer.
1977 Triumph Spitfire 1500
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Disco Picture Website Here
16th May 2015 12:30 pm
Robbie
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
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Land Rover - Turning Drivers into Mechanics Since 1948
Of course, that doesn't preclude that it was miss-fuelled before I had it! (The previous owner was a member on here, but seemingly a none poster as the reg number (Personal) wasn't known.)Mark.
2006, D3 SE Auto - gone but not forgotten.
2014 BMW 530d M Sport Tourer.
1977 Triumph Spitfire 1500
_________________________________________________
Disco Picture Website Here
16th May 2015 8:44 pm
bsm
Member Since: 14 May 2012
Location: Ellikom
Posts: 232
anglefire wrote:
... it only went into limp mode under certain conditions - temperature, throttle position ...
I thought it was random, but maybe some typical conditions. Today we went to the Ethias theater with 3 kids in the car. On 30km I had to stop 6 times for a restart! "Dad, are we going to be late?" ....
Same road back home, no problems .... I didn't do anything to the car in between, I was just outside on the theater parking place. Checked for errors tonight: only P0087, a lost communication and torque information.2017-...: Disco II Td5 auto, 1999, BAS remap, HD TC and auto box Ashcroft, Allisport IC, ACE, 2" lift only coils, BF goodrich KM2 265/70R17, FF front and rear bumper, TF steering guard and tree sliders, nanocom.
2013-2017: Disco 3 TDV6 HSE aut. of 2008, Britpart treesliders, IIDTool, RLD sump guard, BFG KM2 265/70R17, adj. rods, BAS remap + EGRs blanked, silicon IC hoses.
2010-2013: Disco II Td5 of 2000, ACE, front Bearmach HD coils, rear SLS, GG AT2
16th May 2015 9:35 pm
bsm
Member Since: 14 May 2012
Location: Ellikom
Posts: 232
Started adding 2SO JASO FC 2500km ago, no problems since .... 2017-...: Disco II Td5 auto, 1999, BAS remap, HD TC and auto box Ashcroft, Allisport IC, ACE, 2" lift only coils, BF goodrich KM2 265/70R17, FF front and rear bumper, TF steering guard and tree sliders, nanocom.
2013-2017: Disco 3 TDV6 HSE aut. of 2008, Britpart treesliders, IIDTool, RLD sump guard, BFG KM2 265/70R17, adj. rods, BAS remap + EGRs blanked, silicon IC hoses.
2010-2013: Disco II Td5 of 2000, ACE, front Bearmach HD coils, rear SLS, GG AT2
23rd Jun 2015 9:30 am
bsm
Member Since: 14 May 2012
Location: Ellikom
Posts: 232
4000km running with 2SO. Was looking good, but yesterday evening again engine system fault: P0087 00 (68 ) Fuel rail/system pressure too low.
Robbie I was reading 'Robbie's Guide To The Low Pressure Fuel System' (http://www.disco3.co.uk/forum/topic130062.html). Can I conclude I need a new LPFP out of my measurements?
First measured the input current by measuring the voltage over the fuse:
With engine running 9.5mV, engine off ignition on 8.6mV. Using the ohms law and assuming the resistance of the 25A fuse is 2.36mOhm these voltages result in 4.0A (engine running) and 3.64A (ignition on)
Tried to measure the pressure at the schrader valve, but that wasn't a success:
Looked for the best pressure gauge at home, this is the best I could find.
Not perfect to measure these low presures, but I tried. You can see the lowest pressure it can measure is 0.3bar and probably not accurate. Anyway I gave it a try and the result was .... nothing.... the needle didn't move at all...
2017-...: Disco II Td5 auto, 1999, BAS remap, HD TC and auto box Ashcroft, Allisport IC, ACE, 2" lift only coils, BF goodrich KM2 265/70R17, FF front and rear bumper, TF steering guard and tree sliders, nanocom.
2013-2017: Disco 3 TDV6 HSE aut. of 2008, Britpart treesliders, IIDTool, RLD sump guard, BFG KM2 265/70R17, adj. rods, BAS remap + EGRs blanked, silicon IC hoses.
2010-2013: Disco II Td5 of 2000, ACE, front Bearmach HD coils, rear SLS, GG AT2
10th Aug 2015 1:30 pm
bsm
Member Since: 14 May 2012
Location: Ellikom
Posts: 232
To be more sure about the currents I did a current measurement with the DMM. Fuse out and DMM on the fuse connections:
Fuel pump current only ignition on: 3.82A
Fuel pump current engine running: 4.33A
Little higher then previous post, but the voltage measurements over the fuse are a good indication.2017-...: Disco II Td5 auto, 1999, BAS remap, HD TC and auto box Ashcroft, Allisport IC, ACE, 2" lift only coils, BF goodrich KM2 265/70R17, FF front and rear bumper, TF steering guard and tree sliders, nanocom.
2013-2017: Disco 3 TDV6 HSE aut. of 2008, Britpart treesliders, IIDTool, RLD sump guard, BFG KM2 265/70R17, adj. rods, BAS remap + EGRs blanked, silicon IC hoses.
2010-2013: Disco II Td5 of 2000, ACE, front Bearmach HD coils, rear SLS, GG AT2
12th Aug 2015 3:26 pm
Robbie
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932
I'd expect the needle to move. Can you get a cheap low pressure gauge to check properly?
Land Rover - Turning Drivers into Mechanics Since 1948
Member Since: 14 May 2012
Location: Ellikom
Posts: 232
Went to different shops but didn't find a propre gauge. This morning my dad was here and I asked him. Turned out he has the perfect tool I needed, out of his carburator times.
So did some pressure measurements they are not looking good:
Cold engine running: 0.2bar
after 2 mile trip and engine running idle: 0.25bar
When the engine = off the pressure goes up a little to 0.3bar
When revving the pressure drops to 0.1bar, I filmed it:
https://youtu.be/UrBs7LTciTc
On heavy acceleration the pressure goes even negative: -0.1bar !!
I think we can conclude the LPFP is not able to pump enough fuel for the HPFP, am I right?2017-...: Disco II Td5 auto, 1999, BAS remap, HD TC and auto box Ashcroft, Allisport IC, ACE, 2" lift only coils, BF goodrich KM2 265/70R17, FF front and rear bumper, TF steering guard and tree sliders, nanocom.
2013-2017: Disco 3 TDV6 HSE aut. of 2008, Britpart treesliders, IIDTool, RLD sump guard, BFG KM2 265/70R17, adj. rods, BAS remap + EGRs blanked, silicon IC hoses.
2010-2013: Disco II Td5 of 2000, ACE, front Bearmach HD coils, rear SLS, GG AT2
14th Aug 2015 10:50 am
Robbie
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932
Great video - you should add it to my guide thread.
Yep, your LPFP is toast.
Land Rover - Turning Drivers into Mechanics Since 1948
Member Since: 14 May 2012
Location: Ellikom
Posts: 232
Robbie wrote:
Great video - you should add it to my guide thread.
With pleasure.
Is there a way to upload it to the site, didn't find it? Or do you want me to put the youtube link in the tread?2017-...: Disco II Td5 auto, 1999, BAS remap, HD TC and auto box Ashcroft, Allisport IC, ACE, 2" lift only coils, BF goodrich KM2 265/70R17, FF front and rear bumper, TF steering guard and tree sliders, nanocom.
2013-2017: Disco 3 TDV6 HSE aut. of 2008, Britpart treesliders, IIDTool, RLD sump guard, BFG KM2 265/70R17, adj. rods, BAS remap + EGRs blanked, silicon IC hoses.
2010-2013: Disco II Td5 of 2000, ACE, front Bearmach HD coils, rear SLS, GG AT2
14th Aug 2015 2:30 pm
bellautos
Member Since: 02 Feb 2006
Location: NorthYorkshire
Posts: 2532
For anyone else who needs the info as i email to Bart this morning info taken from Topix.
The LP system features the following components:
In-tank fuel pump
Fuel pressure regulator (integral to the fuel delivery module)
Fuel filter
Return pipes and fuel cooler
Injector return pipes
Fuel coolers (engine and vehicle)
The LP system pressure is regulated to 0.5 bar.
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