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Contraband

Member Since: 08 Nov 2010
Location: FIFE
Posts: 3697

Sorry if this is basic... But... You checked continuity of feed and pulse, but did you check if they are shorted? Previously..
Vogue SE TD6
Defender 90 2.4
Defender 110 TD5
Vogue 3.5 EFI

21st Dec 2013 12:05pm

johnboyairey

Member Since: 11 Jan 2013
Location: surrey
Posts: 2026

2012 Range Rover Westminster TDV8 Orkney Grey

Quote:
INJECTOR LOOM
With the loom unplugged on number 1 injector I tested the continuity of the feed wire and the Pulse signal wire back to their points of origin, all good here.

yes, my posts refer to it shorting to earth ie in contact with earth, like its beem squashed under a screw or something, i just wanted this to be known, before you go spending money on a part etc. from my amateur detective work here, i see you have this problem since PCV overhaul, and now you have an ECU fault! possible, and no doubt if so, was caused by something? maybe a direct short. (remedy first before spending!) test both wires to earth and wobble loom in affeced areas. if you are sure of this, no need to 'piece out' loom with temp wires.
and lastly, it runs ok on 7 cylinders, when injector1 disconnected? but still smokes a lot? i cant see you unsmoking it with a new ecu. but that's my hunch. car will tick over ok on 7, just feel sluggish on revving, and no need to revv it! did you remove inlet manifold???its possible its signalling the ecu to shut down one or more plugs. -this is a guess. i remember older bmw engines could do this. (v12 could run on 6 etc) maybe check over at friendly 7 series forums with m62 and m62tu44 engined cars for similar maladies. your lambas are getting beaten up with this smoke, and maybe trying to save you. keep posting. merry xmas!

21st Dec 2013 12:47pm

FTS999

Member Since: 18 Jul 2013
Location: Wiltshire
Posts: 37

2004 Range Rover Vogue 4.4 V8 Java Black

The PCV was changed after this problem started. I had and idea it was either that or the MAF. But neither made any difference. After checking all the hoses and connections, that was my Unmetered air theory out the window.
So we moved onto spark, coils and fuel

With reference to the smoke, If I disconnect number 1 injector and start it up, within a few minuets the smoke has almost gone with very little smell of it running rich.

If I reconnect the injector back up, then all hell lets loose. It starts missing, floods the cylinder and kills the spark, which passes through the cats and burns up.

We think the blackening of the other plugs is down to the system compensating, as the 02 sensor will have detected high levels of oxygen in the mix and requested the ecu to apply more fuel into the system.

I will try and carry out your earth logic tomorrow along with some temp wires running to the plug, Thanks very much

Just hope I'm right.

21st Dec 2013 3:48pm

johnboyairey

Member Since: 11 Jan 2013
Location: surrey
Posts: 2026

that post makes it all sound much clearer. it would indeed sound like the permanent open injector is at fault from a stuck pulse etc. have you checked with a dismantler for a second hand ecm?

21st Dec 2013 8:08pm

FTS999

Member Since: 18 Jul 2013
Location: Wiltshire
Posts: 37

I can get one for £200 but they need coding to the BCM something to do with the immobiliser.
I have found a company called Autotek in Bournemouth than can test and if possible repair my ECU.
If it can't be repaired then I will ask if they can transfer my info onto a secondhand unit,

21st Dec 2013 8:45pm

johnboyairey

Member Since: 11 Jan 2013
Location: surrey
Posts: 2026

in that case, don't lock your car without it in the vehicle, as mentioned earlier!
this sounds an odd fault to me, but then again, its a range rover!

22nd Dec 2013 7:39pm

JAYBOY

Member Since: 17 Oct 2012
Location: South Wales
Posts: 2204

2017 Range Rover Autobiography 5.0 SC V8 Corris Grey

FTS999

How did you get on with the car. 2020 Porsche Panamera Turbo Hybrid (V FAST)
2017 Range Rover Autobiography 5.0 V8
2018 JCW Mini Cooper
2018 Skoda VRS

6th Jan 2014 10:08pm

Contraband

Member Since: 08 Nov 2010
Location: FIFE
Posts: 3697

Yes, would be very interested in an update... Previously..
Vogue SE TD6
Defender 90 2.4
Defender 110 TD5
Vogue 3.5 EFI

6th Jan 2014 10:47pm

FTS999

Member Since: 18 Jul 2013
Location: Wiltshire
Posts: 37

Hi Guys,
Due to the christmas break I had to wait until the new year before I could send the ECU away.
I had a call from Autotek yesterday. They have tested the ECU and found the fuel injection element had been overloaded.
So I have paid £415 of my hard earned cash for them to refurbish it for me.
Should be back with me this week

7th Jan 2014 9:19pm

FTS999

Member Since: 18 Jul 2013
Location: Wiltshire
Posts: 37

Hi guys just to let you know I got my ECU back now sorted works like a dream.
Thanks for all your help and advice it's been brilliant to work with people like you. I don't think I have ever had 5 pages of messages on a forum .

Thanks

14th Jan 2014 1:29pm

Contraband

Member Since: 08 Nov 2010
Location: FIFE
Posts: 3697

Good news....
What about the low compression? Have you tried testing it again? Previously..
Vogue SE TD6
Defender 90 2.4
Defender 110 TD5
Vogue 3.5 EFI

14th Jan 2014 1:39pm

FTS999

Member Since: 18 Jul 2013
Location: Wiltshire
Posts: 37

Not as yet, but I will do them all again just to make sure.

14th Jan 2014 7:40pm

JAYBOY

Member Since: 17 Oct 2012
Location: South Wales
Posts: 2204

Great news fella. You can now get back to enjoying it 2020 Porsche Panamera Turbo Hybrid (V FAST)
2017 Range Rover Autobiography 5.0 V8
2018 JCW Mini Cooper
2018 Skoda VRS

14th Jan 2014 7:52pm

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