Thread: TD5 injector harness - a different idea

Piccies please ......

if such a simple method works , we'd have to sack Blknight and Ladas. The problem is, it is capillary action in the wires so oil will eventually get into the ECU. This method may work on the D2 but may not on the Defender. The Defender's ECU is under the seat in the cabin and is at a lower point than the head therefore rotating the ECU would have no effect.

Mounting it vertically wires facing down on the firewall may though.


Good idea all the same.

I solved the problem on my fender altogether by disconnecting the ECU plug permanently, no oil in the ECU, and it doesn't run rough, in fact it doesnt run at all. But seriously if you raised the ECU to the roofline, surely that would save the problem.Only drama I could see would be will the signal travel thru the extended wiring.

Originally Posted by crump

I solved the problem on my fender altogether by disconnecting the ECU plug permanently, no oil in the ECU, and it doesn't run rough, in fact it doesnt run at all. But seriously if you raised the ECU to the roofline, surely that would save the problem.Only drama I could see would be will the signal travel thru the extended wiring.

I have thought about this for the Defender but was told that the heat may cause a problem, saying that the D2 ECU is in the engine bay surely there would be more heat in the bay than bolted to the roof of a Defender

Having changed two harnesses this week I was pondering this issue. One repair I thought of was as follows : Drill 5 holes in the rocker cover in line with the top of the injectors. Then fit 5 tubes (similar to spark plug tubes on an old Corolla engine - 3K, etc) to exclude any oil from the top of the injector and therefore the loom. Block the original wiring hole in the front of the cylinder head and run the injector loom externally to the now visible injectors. Fit rubber seals to the top of the 5 tubes to prevent water ingress. Problem solved permanently!

Originally Posted by BigJon

Having changed two harnesses this week I was pondering this issue. One repair I thought of was as follows : Drill 5 holes in the rocker cover in line with the top of the injectors. Then fit 5 tubes (similar to spark plug tubes on an old Corolla engine - 3K, etc) to exclude any oil from the top of the injector and therefore the loom. Block the original wiring hole in the front of the cylinder head and run the injector loom externally to the now visible injectors. Fit rubber seals to the top of the 5 tubes to prevent water ingress. Problem solved permanently!

That's a bloody good plan, only pit fall I can see is that you would need to extend the loom to give you enough room to allow removal of the rocker cover, so you could disconnect the wires from the injectors.

.................but that is easy enough to do, with a bit of solder and some shrink insulation.

Would the oil still get into the wires at the plug on the injectors though ?? I don't know I don't have a TD5

From what I have seen it wouldn't. I think the only reason oil gets in is because the plugs live essentially immersed in oil. I don't think they are pressure fed from below, or anything silly like that. Mind you, I could be wrong, I have been wrong before .

I think the loom would be long enough to reach. To remove the rocker cover you would just unplug each individual injector.

An interesting idea was given to me today on this problem and the guy is going to look into, his idea is to fit relays to the wires thus it should stop the oil tracking, i will keep on him for this, i had a look at the plug on the front of the head and the oil is there now and wasnt a week ago