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| lightning Member Since: 23 Apr 2009 Location: High Peak, Derbyshire Posts: 2223  
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Fit a new injector harness anyway, it’s cheap and easy to change.
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24th Sep 2019 8:37am |
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| othorton Member Since: 22 Jul 2019 Location: London Posts: 104 
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Hi All,
I thought I'd give you all an update as the defender has just been returned to me. Before I do, I just want to say here (and I will post in the general section also) how fantastic the service provided by Jones Bros 4x4 up in Ryll was. Whilst the Defender was just inside warranty, Jones Bros have been extremely accommodative. Not only have they gone above and beyond to provide a great service, but they have also paid for my warranty work to be completed at my parents' local indy Rockingham Landrovers in Leicestershire to save me having to drive all the way from London to Wales. After a horrendous journey up from London to Leicestershire (9 hours, an absolute richard of an AA callout refusing to call a tow truck culminating with 2 hours on the side of the a14 at 2 in the morning) I finally managed to limp the defender to rockingham. - they could not recreate the issue despite driving it for approx 75m - there were no faults recorded re. crank position sensor and wiring appeared fine - as per instruction from Merv at Jones they installed a new injector harness (the previous harness showed no real signs of wear and tear) - there was no more oil in the ECU - Upon re-priming the system after the Injector replacement, they couldn't get the car to start - Traced the issue back to the fuel pump, to find that it had been wired up back to front. - Issue solved and back on the road from today Very excited to have my pride and joy back - fitting a few miscellaneous bits and pieces this weekend so see some updates to my build thread next week. Have been told to keep my eye on the oil level to ensure it doesn't rise over the next few trips.  Click image to enlarge |
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18th Oct 2019 2:28pm |
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| jst Member Since: 14 Jan 2008 Location: Taunton Posts: 7682 
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Reprimming the injectors? They took them out? Why?
How was the fuel pump wired up wrong go cause that fault? Cheers James 110 XS Utility 130 Puma Station wagon/camper (in the making) 90 Puma Hardtop |
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18th Oct 2019 5:44pm |
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| Tompoole Member Since: 05 Jun 2011 Location: Bucks Posts: 822 
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td5 always check
3 fuel pump is working 2 crank sensor 1 relay isn't loose under seat lol  Have fun be happy |
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18th Oct 2019 6:11pm |
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| Mdm Member Since: 11 Sep 2013 Location: Sunny Lancashire Posts: 1523
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im a bit confused the fuel pump has a plug on it.it only fits one way?
if you mean they put the fuel pipes on the wrong way round. not sure how it would run? |
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18th Oct 2019 6:54pm |
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| othorton Member Since: 22 Jul 2019 Location: London Posts: 104
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From what I was told, there is a specific wiring order on the fuel pump. And the order was wrong. Rockingham was asked to replace the injector harness by the dealers I bought the car from and then after replacing the rocker cover they couldn’t get it to fire.
Long story short it was a fuel pump issue. Hopefully the last issue for some time. |
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19th Oct 2019 10:37am |
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| dorsetsmith Member Since: 30 Oct 2011 Location: South West Posts: 4554 |
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19th Oct 2019 10:54am |
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| dorsetsmith Member Since: 30 Oct 2011 Location: South West Posts: 4554 |
Click image to enlarge fuel pump socket can only be connected to one way only see ( bottem right hand of the connector in the pic ) Click image to enlarge fuel pump socket wiring pins modded in place Click image to enlarge Click image to enlarge in order for pump motor wired wrong pump has to be removed and two spade connector reversed see top pump motor red and black wire and engine will not start as the two stages of the pump are working wrong around if fuel presser is below 1bar at the injections engine will not start Click image to enlarge If wiring loom plug wire wrong  female connector have to be removed from the plug
They put the fuel pipes on the wrong way round. will not run as the two stages of the pump are working wrong around if fuel presser is below 1bar at the injections engine will not start Last edited by dorsetsmith on 19th Oct 2019 8:53pm. Edited 1 time in total |
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19th Oct 2019 12:46pm |
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| dorsetsmith Member Since: 30 Oct 2011 Location: South West Posts: 4554 |
Click image to enlarge |
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19th Oct 2019 8:52pm |
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| dorsetsmith Member Since: 30 Oct 2011 Location: South West Posts: 4554 |
Click image to enlarge |
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19th Oct 2019 8:54pm |
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| dorsetsmith Member Since: 30 Oct 2011 Location: South West Posts: 4554 |
Click image to enlarge |
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19th Oct 2019 8:54pm |
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| jst Member Since: 14 Jan 2008 Location: Taunton Posts: 7682
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so what your saying is its impossible for it to have run if the pump had been miswired. Cheers
James 110 XS Utility 130 Puma Station wagon/camper (in the making) 90 Puma Hardtop |
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19th Oct 2019 10:49pm |
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| othorton Member Since: 22 Jul 2019 Location: London Posts: 104
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Thanks very much for the detailed reply Dorset.
I appreciate the skepticism from you all and see it as one of the strongest aspects of this forum that people will call out the bull from mechanics attempting to 'have-over' people who are ignorant of the workings of the defender (like me). In fairness, the issue appears sorted as I did another 30 miles in it yesterday and the engine didn't miss a beat. I wonder if it's possible that the pump had been wired incorrectly not at the pump end. Either way the work was carried out under warranty so I am not out of pocket. I suspect there might also be an aspect of dumbing down to make it easier for me to understand. I will let you know if I have any update or if the problem rears its ugly head. |
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21st Oct 2019 9:20am |
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| jst Member Since: 14 Jan 2008 Location: Taunton Posts: 7682
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Cheers
James 110 XS Utility 130 Puma Station wagon/camper (in the making) 90 Puma Hardtop |
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21st Oct 2019 12:19pm |
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