Member Since: 24 Sep 2009
Location: Guisborough
Posts: 202
So, when I finally found my DVM i could test when ignition on that we had 12v. For some reason my dvm kept reading OL when testing the current across the relay. So unscientifically, with the relay back in, i put the ignition on (well my daughter did) and listened to the LPFP. There was a hum/tone sound which sounded like it was trying to pump and couldn't. Also, at the Schrader valve there was a dribble if that. Repeated without the relay and there were no sounds from the lpfp, no fuel at all so i think the wiring is sound. As this has been coming for a while and less intermittently, and now finally nothing from the pump, would i be correct in assuming that the pump has finally failed. I think that I will put a new pump in and go from there as to whether the hpfp needs attention
27th Feb 2024 4:32 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4658
Re: Fuel pump module
ekkypoo wrote:
Repeated without the relay and there were no sounds from the lpfp, no fuel at all so i think the wiring is sound.
I'm confused, In any case it does appear you have LPFP pump and or filter issues. Change the lpfp and the filter for quality replacements. The Britpart LPFP is OEM quality but I would shoot for a better quality filter.
You can use the bridge I mentioned earlier to empty the fuel tank.
Advance Factors do a Mahle filter as part of a "service kit" but I don't know if they sell them outside that kit!yµ (idµ - eAµ) ψ=mψ
27th Feb 2024 5:36 pm
ekkypoo
Member Since: 24 Sep 2009
Location: Guisborough
Posts: 202
So I have a new pump. dropped the tank, taken the old pump out and started to put my replacement pump in but a slight issue. There is a part on the replacement that instead of being held with plastic fittings is held with a circlip type fitting. When I removed the old pump this part was fixed into a recess in the bottom of the tank, but the part on the new one can't because of the clip. So there are two questions. 1 What is is this bit and 2 does it matter if it is not fixed to the bottom of the tank. The part I ordered was from https://www.ebay.co.uk/itm/224509812710
3rd Mar 2024 4:04 pm
ekkypoo
Member Since: 24 Sep 2009
Location: Guisborough
Posts: 202
Click image to enlarge
3rd Mar 2024 4:05 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4658
I posted earlier the links for the correct replacement pump, but you opted for a cheapo unit with the inevitable consequences.
The part you refer to is the pressure regulator, and you can't remove that clip because it holds the regulator together. So you have two choices, return it and get the proper pump, or fit it and do the whole job again in 6 months if not sooner.yµ (idµ - eAµ) ψ=mψ
3rd Mar 2024 5:03 pm
ekkypoo
Member Since: 24 Sep 2009
Location: Guisborough
Posts: 202
thanks for the advice. i had no option but to get this unit as when your rent has gone up 40% in two years needs must. I'll take the regulator off my old pump and put it on the new one. Again much appreciated info
3rd Mar 2024 5:07 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4658
Getting those corrugated pipes apart isn't easy as they are heat shrunk in place, getting them to seal 100% afterwards will be near impossible.
If necessary wait until you have the funds and do it right. yµ (idµ - eAµ) ψ=mψ
3rd Mar 2024 5:13 pm
ekkypoo
Member Since: 24 Sep 2009
Location: Guisborough
Posts: 202
cheers
3rd Mar 2024 5:17 pm
ekkypoo
Member Since: 24 Sep 2009
Location: Guisborough
Posts: 202
So new pump in, tank all reconnected, no leaks. Have turned ignition 5-6 times before trying to start then and you can hear the system priming. Tried to start and its just turns. Getting the p0191 code. When i look at the fuel rail pressure on my icarsoft reader as it cranks it cycles about every half second between 0.4 and 2.6MPa. Any ideas on where next with this?
5th Mar 2024 3:03 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4658
Is there pressure at the schrader valve?yµ (idµ - eAµ) ψ=mψ
5th Mar 2024 3:13 pm
ekkypoo
Member Since: 24 Sep 2009
Location: Guisborough
Posts: 202
Hi again
So got back on this again today. The car still cranks but will not start. With ignition on only, and with the new lpfp in i get about 10psi at the schrader valve for about 20 seconds (pressure seems a little high) before it drops back to zero. Error codes p0191, 0091 and 0003 present after this and the "F" and three amigos come on.
Cheers for any further guidance
Andy
14th Mar 2024 5:16 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4658
PROFSR G wrote:
Check the two electrical connections to the HPFP and the one on the fuel pressure regulator. Also fuses 4,6, 13, & 17 in the BJB fuse box.
From the codes in your last post it appears you still have electrical issues with the connections to the HPFP and the FRPS. If the fuses are OK, and the connections sound, it's time to thoroughly check the voltages at these points before condemning the HPFP. It would be no harm to check fuses 25, 28, & 60 in the BCM box behind the glove box as well.
The LPFP will shut off after 20 seconds if the engine is not running. yµ (idµ - eAµ) ψ=mψ
14th Mar 2024 7:47 pm
ekkypoo
Member Since: 24 Sep 2009
Location: Guisborough
Posts: 202
thanks, will check them today and feedback here
15th Mar 2024 8:19 am
ekkypoo
Member Since: 24 Sep 2009
Location: Guisborough
Posts: 202
So on checking the fuses engine fuse box fuse 13 had blown. Would there be any reason why this would blow? I replaced it and car now starts, whoop! Had it at idle and then 2k, 2.5k and 3k rpm. Fuel pressure fault came back (maybe air in system) so stopped, cleared codes and restarted and repeated the running at revs as before, codes not as yet returned after running for 15 mins cycling through the rev range. Not taken it out for a drive yet but got the below data, any observations would be appreciated
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In any case it does appear you have LPFP pump and or filter issues. Change the lpfp and the filter for quality replacements. The Britpart LPFP is OEM quality but I would shoot for a better quality filter.
