Member Since: 01 Jun 2014
Location: Central Australia
Posts: 8
Disco 3 starting problem !!HELP!!
Gday all.
I have a 2007 petrol V6 SE Discovery 3 that will not start. . .
I have reason to believe it may be an immobiliser problem as the red 'alarm light' is blinking on the dash when I insert the key and also when i turn to accessories it's still blinking. When i turn the key one position further 'just before crank' the red light illuminates solid red then disappears. I then turn to crank and the engine turns over rapidly as it normally does but it doesn't fire...
Sometimes depending on what sequence i unlock the doors and insert the key the engine fires. . just once !! and then dies. it's like it fires and then cuts spark on me due to immobiliser ??
If anyone can advise they're opinion on this it would be greatly appreciated.
New battery , crank position sensor fitted at dealer in feb 2014.
Thanks in advance
1st Jun 2014 2:57 pm
LittleG
Member Since: 21 Sep 2013
Location: Wombourne
Posts: 391
If it were mine I'd probably start with a hard reset, check fuel flow(how old is the filter?) and spark plugs. Check the simple stuff first, spark leads, battery charge etc, if you haven't already
Edit:
And if you've got a code reader check any stored codes
1st Jun 2014 4:44 pm
DiscoAus
Member Since: 01 Jun 2014
Location: Central Australia
Posts: 8
I have performed a hard reset
I have plenty of fuel pressure to the injector rails
New ignition plugs, leads inspected
Checked battery and vehicle earth points
cleaned and inspected all engine control sensors
checked fuses in BJB and CJB
key fob is storing charge > functions > lock, unlock, follow me home lights on/off. Works perfectly
I offer the key into the ignition and it pings "key in ignition" i can give power to accessories (strangely the dvd player is frozen on eject disk screen) HOWEVER the blinking red light is still flashing away at me. . . sometimes constant one flash. . . . sometimes double flash .. .. .. i turn the key to next position> display on dash lights up and runs "system check" red light turns off ! I then turn to crank - instantly RED LIGHT FLASH while cranking - if you then relax the starter trigger it continues to crank - turning back to accesories to stop the starter cranking. . . . .
And there it sits. . . in the dark. . . red light Blinking.
This key did work and it's my only key.
i bought a piece of elm327 obd2 dongle. it has since itself but when it was reading my ecm it put out a code referring to key fob immobiliser program to ecm status.
I know theres alot of roads i can take to start eliminating the possibilities 1 by one but Can any of you guys see something obvious that i cant ?
i have managed to get through most Land Rover workshop pdf files that relate to my problem.
I am new to LR and also Automotive
1st Jun 2014 5:25 pm
stephenw46
Member Since: 22 Jun 2011
Location: West Midlands
Posts: 1202
it seems like the transponder in the key is not being read thus the immobiliser staying on I am not 100% but I think only stealers can reprogram good luck
1st Jun 2014 7:52 pm
kiwirich
Member Since: 02 Oct 2011
Location: Sydney
Posts: 99
Which Path ?
I'd be starting with getting a code reader. An IID tool ( GAP Diagnostics)is the one I have & whilst it's not Bulletproof (idiot proof) it is excellent for nearly everything.
I recall that you can "Pair " new keys to the car with the latest version of the software.
If you don't want to travel down this path, it's off to there dealer ..........
I don't know if there are any near you.
Which ever path you choose, I'd be starting with having the codes read & diagnosed before any more parts replacement.
Let us know how you go
RichardHONI SOIT QUI MAL Y PENSE
2nd Jun 2014 8:39 am
DiscoAus
Member Since: 01 Jun 2014
Location: Central Australia
Posts: 8
Hey guys, So i thought i'd just update you all on where i'm at with this problem..
I had a chat with the workshop fella, down at my local LR dealer. I made him aware of the recent Mechanical work i have performed, it took a bit for me to get his confidence - however after explaining my career in Piston engines, he understood that the car had been competently worked on.
He told me that he only ever changed oil a few times on a 4.0 V6 lr3 and stated that they we're rare out here in the outback. I forwarded my theory to him about the key/immobiliser/Red Light Blinking situation. He stated they "order vin specific keys direct from the UK" and then carry out a "Handshake" procedure using LR diagnostics. So i proposed to have my car brought in, to try out this "Handshake" procedure. He then went on to tell me That he was FULLY BOOKED - but at the same time was compassionate about my predicament, as any good old mechanic should be, and told me to go ahead and bring it in. (this was 5 days ago on saturday the 31st of May)
I Had my lr3 put on a flat bed, and taken down shortly before Lunch.... . . It was Sad to see it sitting on its getting dragged off to the mechanic
Click image to enlarge
He was quite vague with information on what his Diagnostics system could actually perform, but he was confident that they could pair the key to the vehicle.
June in Central Australia is peak Tourist season, and is extremely busy with retired caravaners and off road adventurers passing through or staying in Alice Springs - Also 2 days from now, over the 'Queens Birthday' long weekend, Alice Springs is host to 'Finke Desert Race' one of Australia's Largest Off Road endurance races . THIS TYPE OF ACTION
V V V
So with all that in mind, i've been patient and gave him until yesterday (wednesday) before i gave him a call.
So far he has gone through and checked pretty much everything that i have checked - CJB fuses, BJB fuses, Earth points, Fuel pressure. He Told me that he'd cleared all showing fault codes - and his diagnostics told him that the car was accepting and recognising the key, showing crank speed, airflow, etc etc. . . no more blinking light with key in ignition (apparently). However the car is still a non starter as it was when i had it at my place.
Here is the series of events when he tries to start it - which are EXACTLY the same as when i had it.
1) Key in ignition > turn to accessories > turn to crank > Engine cranks and keeps cranking even with starter position trigger disengaged > Engine does not start. (occasionally fires once for a split second)
2) With No.1 spark plug lead off and a spare plug attached to check for spark > when turned to crank it sparks ONCE and ONCE only. it throws out 1 spark then nothing hence the results from event 1.
The ignition system is receiving 12 volts - but only seems to produce spark on the crank to start circuit and not the "run" circuit.. . this what i decipher as a potential cause of the problem after studying wiring diagrams.
things to consider. . .
1) the dealer couldn't tell me whether the cam sensor showed functionality with his diagnostics ?
2) Is the ignition switch potentially the cause of this ? (stuck on crank)
3) Could it possibly be that the timing has been incorrectly reset ?
4) Worse case scenario i'm guessing is the ECM could be fried ? (would like to avoid jumping to this conclusion)
If theres any guys here on the forum that are in the Know, and could please share advice for this situation, it would be greatly appreciated.
I have my Girlfriends parents up from interstate, for the long weekend. We will have to cancel most of our plans if the "Black Beauty" is out of order.
Any help would be greatly appreciated.
Thanks. Joel.
5th Jun 2014 12:21 pm
Alphamale
Member Since: 28 May 2014
Location: Belfast
Posts: 497
Not yet familiar with the D3 petrol engines, as only just bought mine, but the symptoms you describe remind me of a similar type of problem I had with my D2 V8 i.e. duff crank shaft position sensor at the flywheel. When it failed the engine would crank but not fire and aside from the MIL limp being lit, everything else was normal. In the D2 there is no back-up strategy if this sensor gives up and a new one has to be fitted.
Having said that however, when the fault codes were read it did show a crank sensor error. Might be worth checking it out in any case.
5th Jun 2014 12:58 pm
DiscoAus
Member Since: 01 Jun 2014
Location: Central Australia
Posts: 8
Gday Alphamale .
Thanks for your advice ! However, as posted above, the crankshaft sensor was replaced in Feb 2014.
Along with that, the LR mechanic stated that he was receiving data from the Crank sensor via Diagnostics.
I dont specifically believe this is a 4.0 V6 categorised problem.
I'm leaning towards - Ignition Switch - Network - ECM ECU - earthing problem - cam sensor ?
Can anyone tell me possibly - if the cam sensor is dead. . . would i be getting that 1 spark as described ?
Could there be any reason to doubt the ignition system ground wires ?
Should my LR dealer mechanic be able to tell me via diagnostics whether the cam sensor is dead ?
Any one had an experience with ignition barrel and cranking trigger problems ?
Any advice will be greatly appreciated.
Thanks.
Joel
5th Jun 2014 2:09 pm
Alphamale
Member Since: 28 May 2014
Location: Belfast
Posts: 497
Oops Missed that, would agree does sound like an ignition problem.
5th Jun 2014 4:22 pm
TiaanS
Member Since: 25 May 2007
Location: Pretoria
Posts: 200
Joel
Could you get this sorted, My Disco 3 4l V6 is sitting with the exact problem since this morning?
Member Since: 01 Jun 2014
Location: Central Australia
Posts: 8
Yeah i left the forum to find the answer Robbie mate !
Post a proper technical question = receive no replies
Post a question about tyres for the caravan = 8,000 replies
TiaanS, I believe your problem would be solved by replacing the cam sensor, Located L/H bank rocker cover. If the sensor doesn't effectively tx at engines No1 cylinder TDC position, she'll just crank over and over without firing (occasionally a slight cough/blip/die)
My problem was the in fact the Lobe itself on the camshaft, but i doubt you would have that exact problem. My engine suffered FOD
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19th Sep 2014 2:05 pm
Discologist
Member Since: 19 May 2014
Location: Yorkshire
Posts: 541
DiscoAus wrote:
Post a proper technical question = receive no replies
Post a question about tyres for the caravan = 8,000 replies
That's a bit harsh. The advice from several thousand miles away was to get the codes read and take it from there, which you did. However, it took a strip down to find the actual cause for a fault that sounds pretty unusual, so I can't see what else you were expecting over the web.
19th Sep 2014 2:23 pm
DiscoAus
Member Since: 01 Jun 2014
Location: Central Australia
Posts: 8
perhaps some advice from somebody who had personally logged some hours on these cologne v6 petrols Discologist.
The distance is irrelevant realistically. . .
On a lighter note if anyone has any questions regarding this model discovery 3 with petrol V6, and or questions regarding hitachi EAS compressor rebuild/EAS system maintenance, EPB system repair, I would be more than happy to shed light where possible.
p.s folks CHECK YOUR D3 ECU's FOR CORROSION. . . ALL OF THEM !!!
To be fair, the vast majority of us over here have the TDV6 so you'll find more info on that. The petrol V6 was not even available over here, only the V8. Current: Discovery 3 06MY (55 reg) HSE Auto Zambezi Silver Allisport Fast Road Intercooler, V8 Brakes, Silicone IC Hoses, EGRs Blanked, Remapped, De-Cat pipe, FBHIC
Freelander 2 2007 HSE Manual Tambora Flame
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Disco 3 06 reg B7S Manual Rimini Red
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Several Discovery 300 TDis
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elm327 obd2 dongle. it has since 
Allisport Fast Road Intercooler, V8 Brakes, Silicone IC Hoses, EGRs Blanked, Remapped, De-Cat pipe, FBHIC
)
