Member Since: 30 Jan 2009
Location: UK WALES
Posts: 176
D4 3.0 LTR NON STARTING - 59 PLATE
Has anyone had a problem on a D4 3.0 Ltr TDV6 where it turns over on the key but does not start. Grateful if anyone can share how the problem was solved. I have a 59 plate D4 and all the basis - fuel, triggers, key, immobiliser, fuel pumps and fuel pressure etc have been checked but the injectors do not fire and allow fuel into the cylinders.
Regards
Chris BowlerChris Bowler
D3 2005 EXPEDITION
D2 Challenge Vehicle
300 TDi Spare car
107" TD5 Comp Safari Motor
Have you had the codes read to see what is there and how do you know the injectors are not working..
Flack
9th Jan 2013 10:26 pm
chrisbowler
Member Since: 30 Jan 2009
Location: UK WALES
Posts: 176
there were only 2 codes when the car broke down - p0088 and p0087 high and low fuel pressure. Once cleared, no codes have returned despite cranking many times. I have scoped the injector wires and have no voltage on them. Fuel pressure reaches permisable levels after about 15 seconds but engine will not fire.
Regards Chris BowlerChris Bowler
D3 2005 EXPEDITION
D2 Challenge Vehicle
300 TDi Spare car
107" TD5 Comp Safari Motor
9th Jan 2013 10:33 pm
Robbie
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932
If the fault codes are not returning try a hard reset, crank again and then try the codes. If you have a code reader with live data try looking at the parameters for fuel charging.
Clearly you are right to focus on the initial codes if these are the only ones you have. But I have also seen a duff crankshaft position sensor give the symptoms you describe on a D3 and it gave a false fuel pressure code.
My main interest though is the fact that you had both a high and a low fuel pressure. To me this suggests a problem with the Fuel Rail Pressure (FRP) sensor. This could be the sensor itself or a short in the wiring to the ECM. A problem with this sensor would stop all the injectors from working too.Land Rover - Turning Drivers into Mechanics Since 1948
Member Since: 30 Jan 2009
Location: UK WALES
Posts: 176
Robbie, Thanks for your post I have changed the FUEL PRESSURE CONTROL VALVE on the LH fuel rail today as the though was exactly that the fuel was returned to tank before pressure could be generated. The ECU would then prevent the injectors from firing. Sadly this has made no difference. I am reluctant to change the fuel pressure sensor unless I can prove it is not working. If you unplug the fuel rail pressure sensor, it generates a fault code but when car is cranking, there is no fault code to suggest it is faulty - only that the fuel pressure rises very slowly and there is no way of externally checking fuel rail pressure other than with diagnostic computer. I use Autologic and sadly it will only confirm what the ECU sees. I wonder if the fuel pressure sensor could be scoped to get a picture of its output???!
I am about to scope both cam and crank sensors together to see if they are in alignment - this may prove faulty crank sensor/ reluctor ring or cam belt jumped a tooth( unlikely but we have to check it!!!)
This of course could bve a faulty ECU but at £500 I cannt afford to swap it out at this stage.
Regards Chris Bowler
PS Dealer not involved as out of warrantyChris Bowler
D3 2005 EXPEDITION
D2 Challenge Vehicle
300 TDi Spare car
107" TD5 Comp Safari Motor
10th Jan 2013 6:47 pm
Robbie
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932
I'm sure you could o-scope the sensor with a t-pin and it would be good to see the signal and any noise. I seem to remember that the FRP sensor can only be removed/replaced together with the rail and comes as a complete unit.
Glad you have access to the scope as not a regular DIY tool and I cannot borrow one from work anymore. They really are excellent tools and I have been tempted to buy one of the sub-£300 Chinese 'hand-held' 2-channel scopes that are on ebay to play with.
Hopefully one of the other guys will have some suggestions too.
Land Rover - Turning Drivers into Mechanics Since 1948
Member Since: 30 Jan 2009
Location: UK WALES
Posts: 176
Has anyone had a high pressure pump replaced on their D4 and what were the symptoms
Chris BowlerChris Bowler
D3 2005 EXPEDITION
D2 Challenge Vehicle
300 TDi Spare car
107" TD5 Comp Safari Motor
18th Jan 2013 7:55 pm
fat bloke
Member Since: 07 Aug 2006
Location: OXFORD
Posts: 1257
I would bite the bullet and let a dealership fault it then see what's wrong then decide if it's worth them doing it or yourselves...
18th Jan 2013 8:14 pm
landy0512
Member Since: 13 Nov 2019
Location: gauteng
Posts: 5
disco 4 3.0 non start
guys need advice
got a disco 4 3.0 not starting-cranks but not starting.
have checked the following
front timing with tools in place
rear timing on hpfp with required tools
renewed cam sensor
getting fuel till injectors but no power or injectors not opening
checked wiring from injectors to ecu no break in circuit.
fuel pressure also all ok
any advice will help please
20th Nov 2019 5:04 pm
aja4x4
Member Since: 14 Apr 2019
Location: Westbury
Posts: 2463
Check your oil level
20th Nov 2019 5:23 pm
landy0512
Member Since: 13 Nov 2019
Location: gauteng
Posts: 5
oil level is correct
21st Nov 2019 6:20 am
Browny90
Member Since: 19 Jul 2016
Location: Ashbourne
Posts: 698
Re: disco 4 3.0 non start
landy0512 wrote:
guys need advice
got a disco 4 3.0 not starting-cranks but not starting.
have checked the following
front timing with tools in place
rear timing on hpfp with required tools
renewed cam sensor
getting fuel till injectors but no power or injectors not opening
checked wiring from injectors to ecu no break in circuit.
fuel pressure also all ok
any advice will help please
You're probably better string a new thread to avoid confusion as it could be a completely different issue..Disco4 MY16 SDV6 Landmark Black
Disco4 MY12 SDV6 XS Orkney Grey (Gone)
Defender 90 200tdi Completely rebuilt.
21st Nov 2019 7:42 am
M3DPO
Member Since: 22 Sep 2010
Location: Notts.
Posts: 8235
As above
Have taken the battery out and checked the connections underneath for water ingress or corrosion?It can when others can't,
It will when others won't,
It goes where others don't.
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