Oil in the Harness (2)

**101RRS** · 27th November 2006, 10:45 AM

I don't want to hijack the other 'Oil in the Harness' thread.

I have followed all the discussion on this topic and fully understand the problem and how it works etc. I also understand the new harness doesn't really solve the problem.

As the main issue is the oil creeping up the wires/insulation by "capilliary" action then a physical break in the cable should fix the problem.

So the question is - why cannot the harness be cut and a connector added to join the two pieces together. This should in theory provide the barrier but still let the electrical gizzmos to work. The theory being that capiliary action requires a closed space eg the space between the wire and the insulation for it too creep - when it hits the barrier (a connenctor) it should just come out - unless gravity applies to allow the oil to drip across the connector to the insulation on the other side the capililary action should stop - in theory, the connector just needs to be mounted vertically with the wires from the engine on the bottom with the wires leading to the ECU on the top. As the oil comes out of the wires in the lower end of the connector it should just drip away under gravity and not transfer to the remainder of the harness.

So - why wouldn't this work?

Gazzz

**ladas** · 27th November 2006, 10:56 AM

Whilst no being the owner of a TDi or a TD5, I was confused by this issue, and my thought process was similar to yours.

My thoughts were if you 'break' the connection and fit plug/sockets in the loom - plus add a 'bit' in the middle with 7 'loop' wires - possible encased in a little box, with a high density absorbant material, foam, silica or something similar ..........

The absorbant material could be changed/cleaned once in a while - and can be removed and/or replaced due to the plug/socket configuration

I have purchased the bits and I am in the process of putting a prototype together as we speek

...................but as I said in the other thread - who's going to be game to try it. I haven't a diesel to try it myself ........so I doubt if anyone want's to be the guinee pig.

**101RRS** · 27th November 2006, 12:08 PM

Originally Posted by ladas

...................but as I said in the other thread - who's going to be game to try it. I haven't a diesel to try it myself ........so I doubt if anyone want's to be the guinee pig.

There should be someone out there who is contemplating buying a new harness and might want to give the theory a go - afterall they will have nothing to loose

- if it doesn't work they can just buy the new harness - but if it was a simple as we think - why haven't landrover done it with the new harnesses.

hmmmmmm

Garry

**ladas** · 27th November 2006, 12:19 PM

Originally Posted by garrycol

................. but if it was a simple as we think - why haven't landrover done it with the new harnesses.

hmmmmmm

Garry

My thinking exactly - but sometime the simple approach is often missed

**CraigE** · 27th November 2006, 02:51 PM

There is a connector jut outside the head and another at the ecu. The connector on the head is poorly designed so the oil pools in it. It is also the fact that the oil gets into the core or the wire not just the outer sheath.

**ladas** · 27th November 2006, 05:37 PM

Yes in the wire loops I have 'made up' there are little nicks in the wire at the low point so the oil 'should' drain out

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