Diagnosis Injector harnes to ECU oil?

[CraigE]

Who has had an injector harnes oil backflow issue? What symptoms did you have? My TD5 started to run rough today, almost like it was missing and the engine seemed to vibrate badly. Let it sit for about 3hr, started ok and idled and ran fine for 5 mins then started again and really has not stopped. Checked everything else and left injector harness to last. Pulled off harness loom at front of ecu (red one) and found oil sitting in the harness connector, no oil on outer of wires. Is this a standard diagnosis? No oil in the black (second) harness to ecu at all. Some residual oil in the bottom of the box. Is it only the harness that needs to be replaced?
Thanks

[Slunnie]

I think its not uncommon. There is now a revised harness to prevent the oil moving along it.

[ak]

I believe its a common problem with the TD5. At around 100,000 klm's plus. Just had mine replaced last week when Graeme Cooper noticed the leak. Did not want to wait for the oil to leak back to the ECU so badly that it stuff's the ECU. There are two injector harness not just one and both can leak so its best to replace both at the same time.

[CraigE]

What a silly little oversight this problem is. Pulled apart this morning to have a look. It appears that the O rings on the actual joiner are the problem and the oil passes here, then into the lower connector and into the female plugs, down the wire and to the ecu plug. How quick liquid can get down there is amazing. I cleaned all the affected areas, with contact cleaner, flooded the female connector with contact cleaner and then waited ten minutes. Checked the plug and contact cleaner was coming out dissipating the oil. Gave all a good clean and put back together and car runs beautiful. Even traction control light not playing up. I have ordered the harness through Karcraft ($107) so not a real cost. They were the first of 3 to get back to me after rerquesting urgent quotes. Still have not heard from the rest.
LR recommend changing the engine harness, but as the contact cleaner will flush the wiring I can not see the need at present. May need to clean the ecu connector regularly until all the oil dissipates.
Not a hard job at all to change out. About 1/2 hr.
Old harness could be fixed with new o rings and maybe some silicon (high temp) where the connector sits in the head. Will clean up and keep as a spare.
Things are looking up.

[Blackdisco]

I’m a 2002 TD5 series II owner in Melbourne, Australia

In July last year out of the blue the engine ran rough and then stopped and couldn’t be restarted – an authorised Land rover dealer diagnosed the problem as being a faulty injector (Cyl 3) and after waiting over a week for the part to be imported from UK to Australia (at parts cost of A$2,100) I was back on road again.

Yesterday the same problem happened and another authorised Land Rover dealer is saying the same thing has happened again – this time cyl #2. They claim they checked the electrics and after swapping the injectors 2 & 5 the misfiring cyl moved to #5 so it must be the injector so another $A2,100 plus labour)

Is this a common problem, is it being misdiagnosed or do I just have a lemon?
https://www.aulro.com/afvb/

[stevo]

hi black disco you have to stop going to main stealers,ring around there is a couple of workshops down there that deal in landies.

last year I bought 5 injectors for mine ($900 for the lot) will change them out when I hit 200k then get the others recond

[spudboy]

At that price difference ($2100 ea vs less than $200 ea) it would be worth a drive up to Sydney to get the work done. That is a criminal difference!

[Scouse]

There's 2 types of TD5 injectors - blue & black (?).
One is reasonably priced, the other is exhorbitant.

I'd agree with Stevo though - work & parts from dealers can be very expensive which is why there's quite a few alternatives to choose from.