Member Since: 06 Mar 2017
Location: Lost
Posts: 5036
Is your engine actually running? Is there fuel at the schrader valve when you depress the valve pin?yµ (idµ - eAµ) ψ=mψ
5th May 2020 12:59 pm
lronly
Member Since: 01 Nov 2013
Location: Mellieha
Posts: 67
Hi yes the engine runs and fuel does flow out of the vale when depressed.
My fault is p2290.
To day i took out the lp pump and inspected it and i checked all fuel lines and blew air through them the i changed the hp pump as i had a brand new one that i keep as stock.... all this broight no joy and still have p2290 i floor the throtle and leave it full..... i get a chime and the car starts to go down(deflate corners) and i loose the power and gearbox gets stuck in F
The lp pump has been changed less than a year ago.
Thanks for your support
5th May 2020 9:17 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 5036
Any pics of the gauge connectors?
Also, check the fuel filter and/or replace with genuine or Mahle.yµ (idµ - eAµ) ψ=mψ
5th May 2020 10:20 pm
nastorg
Member Since: 24 Mar 2016
Location: Toulon
Posts: 16
Hi,
a year ago I broke down (limp mode: susp, gearbox ...) on the highway by 40 degrees celsius in the south of France 150 km from my home.
After three attempts to clear the DTCs I resign myself to calling the tow truck.
The car was just coming out of the dealership for replace automatic gearbox.
I begged for the car dealership to pick up the vehicle.
On the my IIDTOOL: Multiples DTCs
Only one does not concern Communication : P0087-00 (2F) Fuel rail/system pressure - too low
The foreman tells me that the fault comes from the handbrake module.
I doubt it, I ask him to check the low fuel circuit.
He refuses…it drags… I write to Land Rover customer service: reply by mail : « Get your car or we will charge you for the caretaking"
2 months later the breakdown, I have finally control
Pressure 0.3 bar and at idle pressure fluctuates a lot or even negative. The pump does not force and draws only 3A.
I base myself on the Robbies guide whom I thank.
I change the pump twice (one oem, one genuine). The tank cover too.
That’s worst. I do not understand.
I give up a bit.
Finally with the lockdown i start again.
I check each hose
I discover by blowing in the fuel return part (connected to the tank) is not so simple that it looks like it. I feel something move inside while blowing backwards.
On its portion closest to the filter it serves as a feed to the front circuit).
After dissection I discover this small part:
In the fuel system from MY2007 it replaces the small hole of the previous filters.
Without this part perfectly in place, most of the fuel returns directly to the tank leaving the bulk of the pumping work to the HPFP pump (by suction).
I order a new part
WFP500570
According to my last tests, the pressure is finally good today.
I think it can be useful for others> MY2007
13th May 2020 11:07 pm
Lrstaylor
Member Since: 03 Oct 2018
Location: Kent
Posts: 615
P0087 low fuel pressure code
Bit of a long one dont want to start a new thread getting p0087 low fuel pressure.
So far hpfp lpfp all wires are good lpfp is drawing the correct current so were all good there. New pressure rail sensor so pretty much everything changed. Including the relay. New fuel filter at the same time weve change the lpfp.
Goes into limp mode only in the summer never the winter all live data for the injectors show in range and now the leak back test looks ok.
Egrs removed and blanked were getting 6psi at the fuel rail.
Anything weve overlooked ??
25th May 2020 4:08 pm
wedgev8
Member Since: 17 May 2019
Location: Kerpen
Posts: 181
...6 PSi at the low pressure site I hope.
Do you have the possibilty to measure the high pressure system at the rail with a gauge?
At the same time you should look the live value of fuel pressure with e.g. an IID-tool.
Do this with cold engine and also warmed up engine. At idle around 300bar is good.
Also check the reference voltage 5V at the yelliw/green wire at the fuel pressure sensor.
Best with a scope or use live value with IID-tool.
And check 12V supply at the VCV and PCV. Volume and Pressure control Valve at the HPFP.
With a scope you can look for peaks and lows while rattling at the wires and connectors.
So I have found a loose contact in the wiring to pressure sensor in my Disco some weeks ago.
Fault P0193
25th May 2020 9:58 pm
Lrstaylor
Member Since: 03 Oct 2018
Location: Kent
Posts: 615
Well live date is purfect, hpfp all good low pressure all good all sensors and connections in the engine bay all good and or replaced.
Gonna pull the ecu tomorrow
26th May 2020 6:13 pm
RichardLlanfyllin
Member Since: 30 May 2019
Location: LLANFYLLIN
Posts: 17
LPFP
I'm stumped (Disco 3 57 plate TDV6 Auto)
I suspect the LPFP. Car starts and runs fine, but under load like up even a gently hill or after an overtake, BONG - Limp mode etc. Stop, restart and the car runs fine either for another 100 miles, or more recently until its under load. NO CODES other than an occasional low rail pressure warning
Using Robbies guide I checked the voltage at fuse 1 and its fine. I measured the amps and it was reading 3.5 but now......wait for it.....it reads ZERO amps so you'd think the pump wasn't running. But turn the ignition on and I can hear the pump cycle up! I can take the fuse out and still the pump cycles up.
The pressure at the valve was only 5psi when I managed to test it last week.
Any ideas?
Addendum - 2 weeks ago when I started the car the fuel gauge read ZERO when I knew I had half a tank - this was after (in an attempt to fix the above issue) I replaced the filter with a LR genuine one. I thought the tank had emptied but after driving about 10 miles, the gauge slowly rose to where it should be. Must be related somehow.
10th Jun 2020 2:41 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 5036
Change the fuel filter first for a genuine LR or Mahle, and go from there yµ (idµ - eAµ) ψ=mψ
10th Jun 2020 2:50 pm
RichardLlanfyllin
Member Since: 30 May 2019
Location: LLANFYLLIN
Posts: 17
Fuel filter changed last week for a genuine LR one.....no difference
10th Jun 2020 3:11 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 5036
5 psi seems OK in these summer temps if its without fluctuation but check carefully the earths. Also the FP relay as this can sometimes be faulty. (You could try swapping for a similar rated relay)yµ (idµ - eAµ) ψ=mψ
10th Jun 2020 4:06 pm
RichardLlanfyllin
Member Since: 30 May 2019
Location: LLANFYLLIN
Posts: 17
Ok. So further developments. A land rover specialist I called said it sounded like an air issue and that I should try to get the car up to him to clear off all the old codes that non-LR readers often fail to do. As a test, I decided to try the journey with the MAF sensor unplugged and it didn't go limp once either up hills or kicking down.
So I was sure it was the MAF but when he put a new one on the new one had the same readings as the old one so he suggested I didn't shell out for a new MAF when potentially it is a boost issue (I can't see that because when it doesn't go into Limp, it goes like a train)
All my IC pipes seem to be in order so I'm not sure.
Can a MAF sensor just play up intermittently like that without throwing any codes? Should I buy a new MAF sensor?
11th Jun 2020 7:29 pm
wedgev8
Member Since: 17 May 2019
Location: Kerpen
Posts: 181
To Richard,
What is the exact fault code ID after the limb Mode comes up ? Best read this with a Land Rover tool or Gap IID tool for example.
11th Jun 2020 8:23 pm
RichardLlanfyllin
Member Since: 30 May 2019
Location: LLANFYLLIN
Posts: 17
Absolutely no fault codes whatsoever read with LR tool. None.
I’m beginning to suspect a garage hasn’t blanked off my EGR valves and this maybe causing the issue
12th Jun 2020 6:19 am
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 5036
There's something not right there if you're getting "limp mode" and bongs etc but no codes?
There has to be a code logged if you are getting these warnings as you can't have one without the other!
Try another diagnostic tool, GAP or Nancom.yµ (idµ - eAµ) ψ=mψ
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