Member Since: 22 Dec 2019
Location: Brabant
Posts: 13
P0087-00 and P2290-00 faults still there after new pcv
Hi forum members,
I have been chasing this issue for more than half a year now. Still fighting the P2290-00 and P0087-00 (low fuel pressure) errors i get after a good warm up of the engine. 2007 tdv6 D3 auto.
The graph below is as close as i get to the error: the pcv % keeps rising up to 50% and the pressure doesn't increase, which makes the car go into limp mode. Only with a well warmed up car.
Click image to enlarge
Last week I replaced the pressure control valve on the HPFP and hoped it would fix the problem. Nope; today the issue came back after a week without issues.
When thinking about: car tells pcv to open and pressure doesn't rise, after replacing the pcv; i can only think about a false registration of the actual pressure - so I maybe should replace the fuel rail pressure sensor?
When I kick down the gas pedal as soon as the pcv % goes up, i can dismiss the error and keep driving.
Today the error P0101-17 and P045D-00 were also in the list. I thing though; seeing the graph directly connected to my fuel supply, it should be somewhere in the fuel supply system.
I also read a faulty camshaft sensor could be the source of these kind of problems, but still; i can't point out why this straight curve to 50% would have been causing this.
Any thoughts? Thanks, this issue is making me mad!
21st Nov 2021 7:51 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4626
Member Since: 04 Oct 2018
Location: Kent
Posts: 589
P0087 is often the hpfp
21st Nov 2021 10:21 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4626
P0087 is related to low pressure on the delivery side of the HPFP. yµ (idµ - eAµ) ψ=mψ
21st Nov 2021 10:31 pm
slider_p
Member Since: 22 Dec 2019
Location: Brabant
Posts: 13
PROFSR G the lp delivery on the schräder valve is 0.3 bar and drops to 0 (probably subzero) when revving. I did fit a new lpfp and fuel filter but no difference.
I don’t know the volume that it should give, do you have a litres/minute figure?
What else could it be on the low pressure side?
21st Nov 2021 11:10 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4626
0.3 is just on the limit where you start to get into dtc's. Colder weather will help improve slightly but if you do a flow test you need to see at least 1.4 ltrs p/m, and ideally above 1.5 ltrs p/m. You can bridge the fuel pump relay contacts 3 & 5 (carefully) to keep the flow above the 20 secs which you'll only get on the key. As for current you should be drawing above 4 amps.
What lpfp did you fit, aftermarket or OEM/original? Also, did you reset the lpfp via diagnostics?yµ (idµ - eAµ) ψ=mψ
21st Nov 2021 11:52 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4626
You can see the current draw here on a new OEM pump and genuine LR fuel filter, with ambient temperature around 18°C (closed system)
Click image to enlarge
yµ (idµ - eAµ) ψ=mψ
22nd Nov 2021 12:13 am
slider_p
Member Since: 22 Dec 2019
Location: Brabant
Posts: 13
Tnx; i didn't know I could reset the fuel lift pump and just did that this morning. What does the procedure do? I thought the pump was quite a dumb thing just going on and off...
I replaced the pump with a OEM one; new filter housing; filter etc included. The tank is clean; no sludge etc. Also the filter is a Mahle filter i think that should be ok. It is a screw on type though; is it advisable to replace the filter housing as well?
I will check the current draw and flow tonight. Can i use the Schrader valve for that purpose or should i just disconnect the fuel line near the schrader valve?
Thanks so much for your assistance!
22nd Nov 2021 11:52 am
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4626
"Fuel pump" reset has nothing directly to do with the pump itself, rather it's the operating parameters within the ECM.
The Mahle filter is fine, and you can leave the housing for now. You can use the schrader as it is for for the flow test if you have the correct fitting. Or, if you don't just remove the centre valve (tyre valve tool) and clamp a lose over the pipe. Have a 2.0lt jug at hand and use a bridge between the FP relay terminals 3 & 5 to run the pump tests. Make sure your DMM is rated for at least 10A before doing the current flow test, though I doubt any D3 will realistically ever get to that figure.
(just be careful with that jumper cable!!!) yµ (idµ - eAµ) ψ=mψ
22nd Nov 2021 2:52 pm
slider_p
Member Since: 22 Dec 2019
Location: Brabant
Posts: 13
Thanks! I checked the amps but only very low. It was 3.58 when I changed the previous pump to the new one, now it is 2.4-ish. That was with "warm" diesel and a full battery just after a 20 km trip, outside temp. around 8 degrees celsius.
I hope my cheap multimeter works well (and I hope i'm using it right...)
Still need to measure the flow.
22nd Nov 2021 7:33 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4626
Yeah I've seen that before after a new pump was fitted but it didn't affect the running. I have a D3 in the workshop that's had a new pump a few weeks ago, so I'll have a quick look just for comparison.
In the meantime see what you're flow test shows. yµ (idµ - eAµ) ψ=mψ
22nd Nov 2021 7:56 pm
slider_p
Member Since: 22 Dec 2019
Location: Brabant
Posts: 13
Ok that was not impressive at all, 400 ml in a minute from the schräder valve.
Should this be a powerful jet of diesel?
I have a new fuel lift pump, new filter… what could be the cause?
Blocked lines or the fuel filter housing?
22nd Nov 2021 10:01 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4626
If you're sure the valve is depressed properly, then there's obviously a problem there. Where did you buy the fuel pump? Britpart is the only OEM pump I'm aware of outside of the original Walbro (LR) pump!yµ (idµ - eAµ) ψ=mψ
22nd Nov 2021 10:46 pm
slider_p
Member Since: 22 Dec 2019
Location: Brabant
Posts: 13
I bought the pump from the main LR dealer, with LR logo on a very expensive box.
Will measure again tomorrow with an old tyre pressure hose for a second opinion.
I just came across the post below, could this be my problem? Or should I probably aim at the electrics side first, maybe make a jump lead to the connector on the fuel tank?
I could also try to unscrew the filter and catch the output straight from the tank…
So many thoughts 🙈
22nd Nov 2021 11:10 pm
Lrstaylor
Member Since: 04 Oct 2018
Location: Kent
Posts: 589
PROFSR G wrote:
P0087 is related to low pressure on the delivery side of the HPFP.
Replaced the hpfp twice for p0087 1st pump was faulty new pump and turned out to be leaking at the seal but only in the summer months 2nd pump cured p0087 and intermittent limp mode.
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