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| geobloke Member Since: 06 Nov 2012 Location: Nottinghamshire Posts: 4410  
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Sorry to hear of your troubles. I have also been plagued by TD5 related non-starting/firing and random cutting out.
I had those exact same fault codes incidentally. When you fit the loom it is a good measure to fill the plug with instant gasket to seal it up, stop any oil getting in to the contacts and then in to the loom leading down to your ECU. The last time I did this job I noticed that the OEM looms were not a snug a fit as the LR version, in particular the seal on the inside of the injector plugs. Think I had a bearmach one and the seals looked woefully inadequate. I also cleaned out the injector contact sockets as well as there was alot of oil pooling in them. Result... Cured the problem and not had it again since. |
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1st Feb 2016 11:01am |
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| rfkdemon Member Since: 02 Apr 2015 Location: Staffordshire Posts: 64 
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Thank you for the advice!
Having replaced the loom with a genuine LR and filled the connectors with silicon contact spray, I am confident it isn't oil in the loom but I will double check tonight that no more has found its way in again. Ideally I could do with finding someone I can quickly borrow an ECU from in the area, for beer tokens obviously! Would anyone be able to confirm that the two ECU's that I could replace it with are either: NNN000120 NNN500020 Thanks, Matt |
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1st Feb 2016 1:51pm |
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| mrd1990 Member Since: 16 Aug 2012 Location: Wales Posts: 600  
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Alive tunning told me the MSB101171, MSB101360 and MSB000080 are the best ECUs for my00 TD5s (at least for remapping!?).
Remember, you can't swap the ECU with another as it is programmed to the alarm ECU - you'll want to swap that as well or get it reprogrammed. Also the injector tolerances wont be correct as they are unique for each engine, this might cause the engine to run rough - Not sure if it will cause engine damage? From what I've read, only the crank sensor will actually stop the TD5 electronic, but if you've changed it then all that is left is the injector loom or the loom between the injector loom and ECU.  Have you checked the ECU socket/plug for any sign of oil or dirt? |
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1st Feb 2016 7:01pm |
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| geobloke Member Since: 06 Nov 2012 Location: Nottinghamshire Posts: 4410
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Well I am currently near you Whitchurch, however as mrd1990 says you cannot just swap an Ecuador it has to be programmed to your injectors and alarm. All kinds of weird craziness would ensue.
One more thing popped up earlier whilst pondering your predicament. When I asked Ian at IRB about this he suggested running the eco earth back to the negative terminal of the battery as even a slight amount of corrosion or loss of contact can do weird things to a TD5 ecu. Worth a try for a length of wire. Same would go for the engine and chassis earths too, make sure they are clean and functioning. Worth a try... |
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1st Feb 2016 8:27pm |
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| geobloke Member Since: 06 Nov 2012 Location: Nottinghamshire Posts: 4410
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Very true, during my trawl through the forums on this subject there was mention of the loom perishing over time and even in some cases the the loom had rubbed on its mountings producing either an intermittent fault or an outright game over rover... Worth doing thorough check of the main gloom running to the ecu. First for obvious wear and if that does not produce any joy a contact by contact continuity test... |
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1st Feb 2016 8:31pm |
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| rfkdemon Member Since: 02 Apr 2015 Location: Staffordshire Posts: 64
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Thanks for the replies!
Sorry I should of mentioned that I have Nanocom and know what I am doing in order to program the ECU to learn the immobiliser and can do injector codes in 30 seconds not that it would need them to run. I have run an earth from the ECU (in fact everywhere that requires one) so that should be good. Had a bit of a break through last night, finger crossed, where by accident I found that if it wiggled the loom going into the seat box I could induce the misfire, make it run perfectly or the left hand relay under the seat would click and the engine cut out. Doing some continuity and resistance tests it was hard to replicate with just one set of hands but the loom is in a right state so I think I need to source a replacement before I spend a load on an ECU. Bit of research later it seems that I need a YSB106902 loom so I will hunt one down and report back when it is fitted. Matt |
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2nd Feb 2016 9:59am |
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| geobloke Member Since: 06 Nov 2012 Location: Nottinghamshire Posts: 4410
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Ah so a loom issue then. Well done for finding that. A singularly irritating fault. There are numerous posts on forums about the subject.
Have you by chance also checked the relays in the ECU compartment? IIRC they are prone to shorting internally and eroding the contacts, esspecially the fuel pump relay (Yellow I think). Worth swapping them out or opening them up to check condition. |
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2nd Feb 2016 10:54am |
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| rfkdemon Member Since: 02 Apr 2015 Location: Staffordshire Posts: 64
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Fingers crossed that I have nailed the fault down now to the ecu loom but until I find one and swap it I cannot be sure.
I have changed the yellow tyco relays but not the rear most black feel at next to the fuel pump relay, this is the one making the click as the engine mis fires and dies. Really struggling to get hold of a new loom though, no body seems to stock them and even LR only make them to order. Not sure if it is worth bothering with a used loom? The 10p with aircon looms seem very rare, does anyone know if a 15p loom with fit? Thanks, Matt |
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2nd Feb 2016 7:12pm |
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| simon119 Member Since: 05 Apr 2012 Location: SG11, Herts Posts: 40 
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I had a similar problem not long ago. Wiggling the loom would make relay click and engine cut out.
Turned out to be one of the blue header joints in the seat box with the ecu. Cut the header off, cleaned up the corroded wires, soldered them together and covered them in adhesive heat shrink. Has been good as gold since, touch wood. Could be worth a try before splashing out on a new loom. Just remember that the header joints to multiple circuits so make sure you only joint the wires together that should be. HTH Simon |
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3rd Feb 2016 9:27am |
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| rfkdemon Member Since: 02 Apr 2015 Location: Staffordshire Posts: 64
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So new loom fitted and it appears to have fixed the cutting out issue, however the misfire is still evident.
It isn't throwing any fault codes but the injector balance is all over the place, does this imply it is the injectors themselves, fuel pump or a cracked head? Picked up some injectors over the weekend so want to get them refurbed to make sure they are good, does anyone recommend anywhere in the midlands? Really need to get this sorted! |
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8th Feb 2016 7:37am |
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| rfkdemon Member Since: 02 Apr 2015 Location: Staffordshire Posts: 64
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Swapped number 2&5 injectors as the balance was way off on these but still the misfire is there after around 15 seconds of running.
Would a dodgy fuel pump cause this or is it more likely to be a cracked head or head gasket? I've picked up a 15p engine anyway as I was planning to build up a special engine for when I put a galv chassis on at the same time but my current chassis has loads of life and the 10p engine has only done 70k so I am keen to get the most out of it and just keep it as a future spare. Cheers, Matt |
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14th Feb 2016 9:50am |
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| JWL Member Since: 26 Oct 2011 Location: Hereford Posts: 3443  
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I know that you would have checked when you changed the injectors but are you positive that the seals and washers were good, the last time I had a fuel misfire problem it was the seals and washers even though there wasn't any tell tale diesel in the oil or even a whiff when you took the cap off
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14th Feb 2016 11:48am |
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| rfkdemon Member Since: 02 Apr 2015 Location: Staffordshire Posts: 64
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I have put genuine injector seals and washers on so fairly sure it isn't that, although I am tempted to change them again just incase.
I don't get any fault codes now that I have changed the loom, just a slight misfire after 15 seconds of running. Loathed to replace the lift pump as I have had it out and all seems ok filter wise, plus surely it would only effect fuel flow at the top end, not at idle? Cheers, Matt |
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18th Feb 2016 10:28am |
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| Fatboy Slim Member Since: 04 Feb 2008 Location: Bridgend Posts: 1006
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What's your fuel pressure like ?
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19th Feb 2016 9:50pm |
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