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RF3777



Member Since: 10 Apr 2015
Location: Hong Kong
Posts: 144
Hong Kong 2003 Defender 110 Td5 USW Corris Grey
Am I run in trouble? Injector harness need to replace???
The story was TD5 loss of power when going uphill...
http://www.defender2.net/forum/topic36508.html
Sorry I open a new topic here...I did clean the MAF sensor, also the MAP sensor, nothing change!
I think the loss of power actually on flat road also, but going up hill is just too obvious...
after the MAP sensor, I can see the injection harness plug is full of oil, this TD5was build 2003, I did check the VIN number,
2003 should run out of the injection harness problem, but here I am...
Do I need to replace this? Is this the injection harness?





Last edited by RF3777 on 2nd May 2015 12:12pm. Edited 2 times in total
Post #420630 2nd May 2015 12:01pm
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mk1collector



Member Since: 17 Sep 2009
Location: West Yorkshire
Posts: 6769
England 2004 Defender 110 Td5 CSW Bonatti Grey
It probably does need replacing. If you unplug the red plug off the ecu and look for oil there, clean any off and check and clean again every couple of days and your power should come back. Ray
My build thread
http://www.defender2.net/forum/topic17615.html
Post #420631 2nd May 2015 12:04pm
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RF3777



Member Since: 10 Apr 2015
Location: Hong Kong
Posts: 144
Hong Kong 2003 Defender 110 Td5 USW Corris Grey
I want post up the photos of the plug, but I don't know how???
I didn't check the ECU under the seat yet, but is this Harness make the defender loss power?
Post #420632 2nd May 2015 12:06pm
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RF3777



Member Since: 10 Apr 2015
Location: Hong Kong
Posts: 144
Hong Kong 2003 Defender 110 Td5 USW Corris Grey
mk1collector wrote:
It probably does need replacing. If you unplug the red plug off the ecu and look for oil there, clean any off and check and clean again every couple of days and your power should come back.

I'm going to try this tomorrow!
Post #420634 2nd May 2015 12:07pm
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RF3777



Member Since: 10 Apr 2015
Location: Hong Kong
Posts: 144
Hong Kong 2003 Defender 110 Td5 USW Corris Grey
I did a little cleaning to this plug, lots of oil in there...

Post #420635 2nd May 2015 12:14pm
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roel



Member Since: 08 Aug 2009
Location: Lelystad
Posts: 2039
Netherlands 2003 Defender 90 Td5 PU Caledonian Blue
The ECU (under the righthand seat) has a black and a red plug. If the red plug has shows off oil and it probably will you need the change the injector loom under the valve cover.


Click image to enlarge 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)
Post #420740 2nd May 2015 8:06pm
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RF3777



Member Since: 10 Apr 2015
Location: Hong Kong
Posts: 144
Hong Kong 2003 Defender 110 Td5 USW Corris Grey
Some work this morning, the ECU area as clean as new, I guess previous owner didn't know the oily ECzu issue!
I took the ECU out for clean, was full of oil in the red plug!







Post #420783 3rd May 2015 2:47am
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mk1collector



Member Since: 17 Sep 2009
Location: West Yorkshire
Posts: 6769
England 2004 Defender 110 Td5 CSW Bonatti Grey
You should have some power back now but more oil is likely to work its way down over the next couple of weeks with the amount there was in the top plug. Keep checking and cleaning the red plug every couple of days and replace the injector harness. In the next couple of days I'm going to put up a post about sealing and replacing the injector loom with pics. Ray
My build thread
http://www.defender2.net/forum/topic17615.html
Post #420833 3rd May 2015 9:42am
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RF3777



Member Since: 10 Apr 2015
Location: Hong Kong
Posts: 144
Hong Kong 2003 Defender 110 Td5 USW Corris Grey
Took 50km ride after cleaning the oil...but no luck, no improvement! Crying or Very sad
In other post I update, unplug the MAF sensor the power came back Mr. Green
Post #420857 3rd May 2015 11:23am
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Screbble



Member Since: 26 Apr 2015
Location: Lancashire
Posts: 2108
United Kingdom 2004 Defender 90 Td5 XS CSW Zambezi Silver
This may be a silly question.....

.....but I'd rather ask first than find out the hard way.

Can you simply disconnect the red ECU plug (with the ignition off) without affecting anything i.e. settings etc.

Sorry if this is obvious - it will be to me once I've been told!

I suspect I may find some oil in mine too.

Cheers,

Will
Post #420876 3rd May 2015 12:41pm
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JWL



Member Since: 26 Oct 2011
Location: Hereford
Posts: 3443
England 2002 Defender 110 Td5 SW Coniston Green
Yes, no problem.
Post #420889 3rd May 2015 1:36pm
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Screbble



Member Since: 26 Apr 2015
Location: Lancashire
Posts: 2108
United Kingdom 2004 Defender 90 Td5 XS CSW Zambezi Silver
Cheers JWL.
Just had a peek......

Yes, there's a faint trace of oil on the plug face and inside the socket.

Nowhere near the amount on the pics on the post above BUT it's the thin end of a potentially expensive wedge.

I've cleaned it all out but I think a new injector harness will be sound investment coupled with some aforementioned sealing.

No related performance issues so far but more through luck I guess.

Hey ho!

Will.
Post #420895 3rd May 2015 2:10pm
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RF3777



Member Since: 10 Apr 2015
Location: Hong Kong
Posts: 144
Hong Kong 2003 Defender 110 Td5 USW Corris Grey
I first remove the negative cable from battery, then remove the red plug to clean!
When I re connect everything, only the OEM radio asked for the radio code when try to turn on, that was in the owner manual, no other issue at all!
Post #420929 3rd May 2015 4:58pm
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RF3777



Member Since: 10 Apr 2015
Location: Hong Kong
Posts: 144
Hong Kong 2003 Defender 110 Td5 USW Corris Grey
mk1collector wrote:
You should have some power back now but more oil is likely to work its way down over the next couple of weeks with the amount there was in the top plug. Keep checking and cleaning the red plug every couple of days and replace the injector harness. In the next couple of days I'm going to put up a post about sealing and replacing the injector loom with pics.


Hi, Ray

Do you some pic to show yet?

Mr. Green
Post #422186 9th May 2015 9:36am
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RF3777



Member Since: 10 Apr 2015
Location: Hong Kong
Posts: 144
Hong Kong 2003 Defender 110 Td5 USW Corris Grey
Have the injector harness change today, but no luck, the TD5 still go under power up hill...

Clean the red plug, yes, was oil in there again...
The rocker box cover was full of oil, also all the injector, I remove the old injector plugs, I forgot to clean them(may be they are cover with oil), then plug in the NEW one, fit the new gasket seal, put back everything, go for a ride , same Censored no power on hill, 3rd gear going about 40km per hour...





Post #422367 10th May 2015 10:57am
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