Member Since: 06 Nov 2008
Location: Off the Plain
Posts: 1593
Mine had similar a few years back and both the HP and LP fuel pumps were bad. I wonder if the low one had been bad for a while and cause the high pressure pump to fail. There's a guide to testing the low pressure fuel system on here. I'd start with that and rule it out.
6th Sep 2021 8:50 pm
Torgeir
Member Since: 14 Apr 2021
Location: Trondheim
Posts: 29
PROFSR G wrote:
Yes, it's the fuel rail pressure sensor but it's critical you have the correct one which is rated for the tdv6 system. I think for that reason Siemens/VDO only make it available with the complete rail.
Though there does seem to be sensors available separately, there's no guarantee they are the same. You can confirm or otherwise by the labelling numbers on the switch.
Speaking to a technician at dealership a while back the sensor comes with the rail since they don't have the torque specs in the manual and it is ordered together. I bought the sensor only from a independent land rover specialist shop here in Norway. Haven't changed it yet since I don't have much faith in that being the issue but it is the last thing on the list now so will do it soon.
Now I am suspecting the harness to the fuel regulator or other electrical fault. Or something worn throwing off the remap or something.
I will drive it for a while now then have the local dealer troubleshoot for a few hours.
14th Sep 2021 8:31 pm
Torgeir
Member Since: 14 Apr 2021
Location: Trondheim
Posts: 29
sarumlight wrote:
Mine had similar a few years back and both the HP and LP fuel pumps were bad. I wonder if the low one had been bad for a while and cause the high pressure pump to fail. There's a guide to testing the low pressure fuel system on here. I'd start with that and rule it out.
I have swapped low pressure fuel pump and done the pressure, current draw and flow test after. All good values after the change.
14th Sep 2021 8:32 pm
enthusiast
Member Since: 03 Jul 2021
Location: Bonn
Posts: 5
Did you find out which torque to use?
Which torque did you use?
I have a broken FRPS (broken in the real sense, it literally fell apart) and need to replace it now.
Part number is 5WS40050 in my case (2006 tdv6 2.7).
26th Sep 2021 7:58 pm
Torgeir
Member Since: 14 Apr 2021
Location: Trondheim
Posts: 29
No, I don't know the torque for the FPS. I had mine replaced at the Land Rover dealership when I had it in for a diagnosis.
Update on the issue: Took it to a Land Rover deal for a proper diagnosis and they found a crack in the inlet manifold near injector 6. Unsure if that has been there all along and it is the root cause or if it was cracked while another garage changed the injectors.
After changing the inlet manifold they recommended restoring the software for then Engine Control Module ECM and the Transmission Control Module TCM to OEM to hope to get cleaner fault messages, if the fault is still there. At the moment I get a few U-related communications errors that the other modules is not getting correct data from the ECM. The car is remapped, has EGR blanked, DPF removed and some software modifications to smooth out the gearbox according to the previous owner.
26th Oct 2021 7:25 pm
NemD
Member Since: 30 Jan 2023
Location: Berkshire
Posts: 1
Torgeir
Thanks for all this info. It is step by step what I have experienced thus far upto the spill test which I am about to do. I had an exchange recon HPFP which did not work at all. Refitted the original pump but now have several codes and stuck in limp mode.
30th Jan 2023 9:52 pm
thommo78
Member Since: 04 Jun 2012
Location: Edinburgh
Posts: 15
Hi mate. Bit of a late reply here but did you check the mesh gauze at the bottom of the lpfp in the tank. It gets blocked and will give you those symptoms. Happened to me. Hope this helps.
29th Jul 2023 8:49 pm
Adam Howes
Member Since: 03 Aug 2023
Location: Kettering
Posts: 1
Did you get to the bottom of this? Experiencing same issue. Set to change torque converter next week as preventive maintenance so will see if it works like the original post suggests that’s what they heard too!
3rd Aug 2023 9:55 am
petestanley
Member Since: 22 Dec 2021
Location: Birmingham
Posts: 4
I was experiencing this issue I was going around in circles trying to avoid an HPFP but it turned out to be a leaking injector. To be fair it was a random spot I could have missed it, replaced the injector and it's not happened since. As you can see it was right at the top. Can only assume it was leaking at a higher volume under load lowering the rail pressure.
26th Aug 2023 9:33 pm
James M
Member Since: 19 Dec 2023
Location: Scotland
Posts: 26
Hi Torgeir
Torgeir wrote:
No, I don't know the torque for the FPS. I had mine replaced at the Land Rover dealership when I had it in for a diagnosis.
Update on the issue: Took it to a Land Rover deal for a proper diagnosis and they found a crack in the inlet manifold near injector 6. Unsure if that has been there all along and it is the root cause or if it was cracked while another garage changed the injectors.
After changing the inlet manifold they recommended restoring the software for then Engine Control Module ECM and the Transmission Control Module TCM to OEM to hope to get cleaner fault messages, if the fault is still there. At the moment I get a few U-related communications errors that the other modules is not getting correct data from the ECM. The car is remapped, has EGR blanked, DPF removed and some software modifications to smooth out the gearbox according to the previous owner.
26th Jan 2024 10:28 pm
James M
Member Since: 19 Dec 2023
Location: Scotland
Posts: 26
I know it’s been a few years but I’m struggling with the same problem / mystery you could say my cars has been at the Land Rover dealer for over 6 months now and before that spent 7 months at a Land Rover specialist and no one can determine what’s causes low fuel pressure on hard acceleration or some times just driving more than 10 miles with it. It has had very part and test that anyone can think of like 2 high pressure pumps 2 low pressures fuel pumps new set of injectors , fuel pressure sensors, engine ECU replaced , all wiring tests multiple times and much much more. Did you ever get your fixed cause it doesn’t look like mines going to get fixed any time soon and it’s costing a fortune? Thanks James
randomly gets transmission fail, 3 amigos, looses power , suspension drops - restart and its fine??
same codes p0087
loss of comms to several ecu's
p2290-00 injector pressure too low
p000E-22 fuel volume control exceeds limit
been to 2 specialists both changed fuel filter, 2nd did housing and filter and a leaky injector, has had new brake switch about 6 years ago - wondering if i should change that to eliminate it? brake lights work and filaments look ok
had a replacement terrain switch about 6 yrs ago also - wife was fiddling with this the other week and just read that could also be an issue??? had a twiddle and checked all modes - appears to be working ok?2008 Discovery 3 2.7 HSE
Decide to change the brake light switch to the one that came with the car I was keeping as spare, also cleaned and contact cleaned the suspension level sensor on left front as it had seemed a bit low on occasion, and reset steering angle sensor as I’ve found posts where these could also be a cause of limp mode!!
Also tested the valves on suspension with iid tool
Also got the fbh to fire up and make the neighbours think the car was on fire!!
Reset all faults
As I reset steering angle sensor I immediately got hdc fault, then special programs fault ??? Reset again and faults cleared
Drove about a mile and got hdc fault , special programs fault again and brake pedal went hard - but no transmission fault this time - car still revved ok but suspension dropped - turn off and reset , as I drove back the brake pedal got harder to the point the brakes were binding - managed to get home and swapped the brake switch back again, reset faults - which now showed C1 A96-64 brake switch algorithm based failure. Cleared that and brake pedal back to normal ?? So I’ve ordered a brake switch from Craddocks hoping that both of the switches I have have faults and this may cure my problem??2008 Discovery 3 2.7 HSE
7th Mar 2024 6:20 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 5061
James M wrote:
I know it’s been a few years but I’m struggling with the same problem / mystery you could say my cars has been at the Land Rover dealer for over 6 months now and before that spent 7 months at a Land Rover specialist and no one can determine what’s causes low fuel pressure on hard acceleration or some times just driving more than 10 miles with it. It has had very part and test that anyone can think of like 2 high pressure pumps 2 low pressures fuel pumps new set of injectors , fuel pressure sensors, engine ECU replaced , all wiring tests multiple times and much much more. Did you ever get your fixed cause it doesn’t look like mines going to get fixed any time soon and it’s costing a fortune? Thanks James
I don't know your exact location, but I'd suggest the shortest route to solving your issues is you have a chat with site member Disco Mikey, who's based in Dundee. (MMP Land Rover) yµ (idµ - eAµ) ψ=mψ
7th Mar 2024 6:58 pm
James M
Member Since: 19 Dec 2023
Location: Scotland
Posts: 26
Hi ! PROFSR G
Thanks for you reply
Ohh yes I have seen Disco mikey recommended and committing regularly on this forum but I am about 280 miles away but at least I could drop his a message regarding the matter as long as he likes head scratching nightmares of cars !
I have also seen you committing great information on similar fuel pressure issues and meany other matters on this forum so was wondering what you think of this query I have noticed with this Range Rover sport in question using an iid tool compared to are second car a discovery 3 is that with the tool showing fuel rail pressure but only with ignition on the rail pressure on the running perfectly D3 is showing “ 350 kpa “ but on said Range Rover sport with the low pressure issue with only ignition one it’s showing exactly 1000 kpa?. I would except a little different between the two cars as the sport dose have a new low pressure pump but the difference seems a bit much and when I try googleing this I can’t find a straight answer apart from my number seems far too high for just intank pump running ?
I did briefly mention this to the master technician that supposed to be working on the car and he thought that didn’t sound right but he was in a rush when I spoke to him.
Just wondering what your thought were for this reading ?
Thanks
James
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