 | Home > Td5 > TD5 Oil In ECU |
 
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| roel Member Since: 08 Aug 2009 Location: Lelystad Posts: 2039   
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Yes it could be. Strange electronic behavior and the engine not nice running are symptoms of oil in the red ECU plug.
First you could have a look at the plug at the front of your engine. The one that front right side in the upper part off the engine. But connect from below. If there is no oil there in no oil near the ecu, but if there is oil there might be oil at the ecu. Roel 1984 90 2.5 na Diesel - RR V8 (1994-2001) 1997 Camel Trophy Discovery 300TDI (2001-2009) 2005 G4 Discovery III 4.4 V8 (2008-2018) It's gone but it still hurts. 2003 90 Td5 (2009-now) |
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5th Jun 2020 4:28pm |
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| Tank Member Since: 25 Jul 2014 Location: Fife Posts: 431  
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Thanks Roel. Thats tonights job then
Duncan |
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5th Jun 2020 4:31pm |
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| LandymanStefan Member Since: 30 Aug 2017 Location: Surrey Posts: 881  
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Not always the case, i had oil in my ecu and a dry injector harness plug. However my rocker cover gasket was leaking quite badly and my crank sensor + plug were covered in oil and the wires were slighlty damaged so i think the oil was being wicked in from there. No roblems since changing the crank sensor wiring and rocker gasket. |
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6th Jun 2020 1:36pm |
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| Tank Member Since: 25 Jul 2014 Location: Fife Posts: 431
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Hi Stefan
Yeah I have a dry injector harness plug at the head! Weird! Still to take the seat out to check the ECU but if its dry at the head end you wonder if there would be oil in the ECU? Duncan |
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12th Jun 2020 12:09pm |
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| roel Member Since: 08 Aug 2009 Location: Lelystad Posts: 2039
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It might be a loose earth or bad earth somewhere. That could be near the ecu or in the dash. Roel
1984 90 2.5 na Diesel - RR V8 (1994-2001) 1997 Camel Trophy Discovery 300TDI (2001-2009) 2005 G4 Discovery III 4.4 V8 (2008-2018) It's gone but it still hurts. 2003 90 Td5 (2009-now) |
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12th Jun 2020 7:20pm |
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| Kernow Member Since: 26 Jun 2020 Location: South West Posts: 8 
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Oil in the loom and ECU is common with the TD5 Discovery. I don't think I've come across a single one that hasn't been affected. A LR technician told me once that their approach was to spray the socket with brake cleaner and leave it face down to drain out overnight. He told me he never knew of it not working.
At the same time the injector loom should be changed. You may get a residue of oil come through until the external part of the loom is clear. Some people have reported success by putting another connector in that part of the loom that comes from the head to break the flow. It is apparently a capillary action down the conductors inside the insulation. |
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26th Jun 2020 10:07pm |
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| Davethebassist Member Since: 22 Mar 2017 Location: Norfolk Posts: 1 
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I've had the same problem, poor starting etc etc.
I've changed the injector loom but since the problem seems worse than ever. Always solved by a quick spray and dry out overnight then starts fine. Do I need to be more patient or do I have another problem? Possibly bad Earth somewhere? Any advise gratefully received, it's driving me mad! |
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14th Jul 2020 7:23am |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17388 
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When my TD5 Disco had this problem I ended up opening up the ECU and cleaning it both outside and in with brake cleaner, finally resealing it. At the same time I replaced the within-engine harness with a new genuine one that I had sealed properly beforehand, and for about one month afterwards I regularly cleaned the residue that was still oozing from the external harness. After this there was no further residue. That was at least 15 years ago and it has given no trouble since. |
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14th Jul 2020 7:46am |
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