Member Since: 25 Aug 2009
Location: Are you sure this is the M5 ?
Posts: 1498
Aparent fuel starvation - check wiring
Whilst on my way to work this morning, happily driving along at 40mph, and only approx. 3 miles from home, the engine suddenly cut out
This resulted in SWMBO coming out to pick me up, a call to the 4th emergency service, and then to my complete surprise being told a LR technician in his D4 was only 30 mins away, and would be with you asap, that's a result I think
So, the roadside diagnosis quickly determined there was no fuel getting to the inlet side of the HP fuel pump, which suggested a suspect LP fuel pump (the one in the fuel tank) may have failed
A short tow home behind one of these (using a fixed draw bar)
Click image to enlarge
With my beloved D3 back on the drive, I decided to carryout some checks to try and find what the fault was, the fuel pump relay was ok, and 12 volts present at fuse F3 (in the engine bay fuse box), so not wishing to drain the fuel, and drop the tank too quickly, I decided to check the supply circuit, so checking the wiring diagram, the next connector in the circuit is the one at the rear of the OS wheel arch
Click image to enlarge
All looked ok at first glance, I decided to just give the wires a wiggle to make 100% sure
And . . . . AH HA, there's the culprit, a nicely corroded and broken wire, which surprise surprise just happens to be the feed supply to the 'in tank' fuel pump . . .
Click image to enlarge
Why I decided to check this first, who knows, but I'm so glad I didn't just assume the fuel pump had failed and drop the tank, and fit a new one, as it still would not have worked and I would have spent ££££'s that I didn't need to
Moral of this story, never assume, and always start any fault diagnosis with the easier stull first
And I would strongly suggest that those of you with a D3 check these wiring plugs, they are situated at the rear of each front wheel arch, you need to remove the wheel arch liner to get at them, but it may just save you a future breakdown Never get mad - get even !!
06 D3 now gone to family member and still going strong at 265k
previous vehicles:
04 D2 TD5 - (clocked 189k from new)
52 X-Trail 2.2 SVE
various euro boxes !
Last edited by disco_steve on 19th Mar 2014 7:46 pm. Edited 1 time in total
19th Mar 2014 5:01 pm
Sloss
Member Since: 18 Aug 2013
Location: Aberdeenish
Posts: 1691
Nice spot
Always best to check the simple, easy to get at possibles first Stew,
2010 D4 gone but I really loved it
Went back to Merc - C350 AMG
19th Mar 2014 6:30 pm
Robbie
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932
Connector 3009 I think - very good spot. I can also see a bit of the loom exposed a further 6" or so higher up the loom, so give that a good check too.
Are you going to buy a new crimp-terminal or bypass the connector with a patch for now?
Land Rover - Turning Drivers into Mechanics Since 1948
Member Since: 25 Aug 2009
Location: Are you sure this is the M5 ?
Posts: 1498
I crimped a 'by-pass' piece of new wire in as a temporary, applied several layers of insulation tape, and a heatshrink oversheath which will hopefully last a while
I'm toying with re-doing them all, with a new pre terminated plug, YM1900580, but I'm not sure if these are available separately or I will need to order the complete repair kit YPL1900480 which include new plugs, wire, heatshrink and even a 'stripping tool' although this seems a waste to me
This is the 3rd fault I've had in the last 3 years as a direct result of the ridiculous positioning of these plugs The f1st was fuel related, the 2nd was the pressure sensor to the air reservoir and now this one
What buffoon in LR R&D when faced with a solution to connect the body harness to the chassis harness during the development stage of the D3 thought . . . . (assuming they did actually 'think' )
I know, I've got a fantastic idea, lets put them at the rear of the front wheels so they can be constantly blasted with all the water and mud sprayed up by the wheels Never get mad - get even !!
06 D3 now gone to family member and still going strong at 265k
previous vehicles:
04 D2 TD5 - (clocked 189k from new)
52 X-Trail 2.2 SVE
various euro boxes !
19th Mar 2014 8:17 pm
Robbie
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932
The connector itself looks ok and I understand that you can buy the termination pins and environmental plugs on their own. I'm sure someone will know what to buy and from where so you could just crimp a new one on.
Land Rover - Turning Drivers into Mechanics Since 1948
Member Since: 20 Oct 2009
Location: London, UK
Posts: 1318
Robbie, you being in the know, any clues where this plug is located on the MY07 onwards D3s?
ThanksA few mods... and keeping it all running...Faultmate MSV2
MY09EGR's blanked Thanks Bellautos, BAS
13th Dec 2014 8:29 pm
Robbie
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932
I thought it was in the same place but judging by your question I guess not!
It must be somewhere close by.Land Rover - Turning Drivers into Mechanics Since 1948
Member Since: 20 Oct 2009
Location: London, UK
Posts: 1318
No trust me not there or on the other side spent the whole afternoon outside, taking wheels of and inner wing plastic Design improvement on pre My07 but still not helping to find the relevant plug.
Can't find your other post which had a wire diagram of the fuel sender etc
A few mods... and keeping it all running...Faultmate MSV2
MY09EGR's blanked Thanks Bellautos, BAS
13th Dec 2014 8:39 pm
Andy03
Member Since: 02 Dec 2012
Location: Four Marks
Posts: 27
hi looking at this Ive been having no gauge and today it started to kangaroo down the road (Ive posted on another thread) but I've now taken all apart and what is the other terminal block. on this the green wire was split so cut. the white one looks a bit dodgy also.
is this the sensor connector ?
Thanks
20th Feb 2015 6:58 pm
Robbie
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932
From memory the green one is one of the 2 fuel sender units with the white (and purple?) one being the LP fuel pump.
It's easier if you keep to a single thread for us simple folk.
Land Rover - Turning Drivers into Mechanics Since 1948
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum
