TD5 Defender - Oil in injector harness

[boristhebold]

Anyone else had the well known issue of Oil travelling down the injector harness and pooling in the plug to the ECU ? And what is the best fix ?

[Lee argyle]

Originally Posted by boristhebold

Anyone else had the well known issue of Oil travelling down the injector harness and pooling in the plug to the ECU ? And what is the best fix ?

Swap the loom out, parts £40 and about 1/2 hour to do

[paulbrown22]

As above - I researched it in case I ever had to do it, the parts were £40-50, and it wasn't super hard job, although I might allow a bit more then 30 mins to complete for the first time! Thankfully in 9 years of ownership I never had to do it.

It's been written up various times in the mags as a step by step guide, and from a quick Google, there's loads of forums/blogs and YouTube videos on how to do the swap.

I vaguely remember some people initially using contact cleaner or something to try and clean the pins out as a temporary fix, but given the cost of parts and relative ease of replacing them, if this is causing a problem on your vehicle, as per Lee, I'd just swap the harness out.

[breezeblock]

oil leaks on a landrover thats unusual

[Starovich]

if there is no oil under it, there is no oil in it.

[otilly]

Take off valvecover, remove loom to injectors, clean valvecover gasket and aply liquid gasket. Install cover.
In following weeks clean red plug in computer with brake cleaner.


Repeat in 5 years or so

[simonl]

I've never worked out why oil affects the connectors? What actually happens?

[paintman]

It's a very common TD5 issue.
Here done on a Disco 2: www.discovery2.co.uk / Workshop /Injector Harness

AIUI oil is generally not a conductor of electricity but I would expect the contamination in used engine oil might change that & cause the problems?

[otilly]

It doesn't really affect the connectors, but if left for a long period of time, the oil will enter the computer and there it will destroy components.


Every 10.000 km's your car needs service; a simple check of the big red connector is part of that checkup.