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| davew Member Since: 02 Jan 2012 Location: North Yorkshire Posts: 888   
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I don't suppose you have access to an oscilloscope of any kind or know someone local that has ?
Where are you measuring the fuel pressure, at the regulator inlet ? It'd be nice to know if the injectors are firing or not simply because that should pretty much determine if it's a mechanical or electrical problem. Putting a scope, or possibly an analogue volt meter on one of the injector outputs from the ECU would tell you if the ECU is firing the injectors. If it is then you can rule out immobilisers, crank sensor and throttle pot... which reminds me, in Nanocom just check that the throttle pot looks to be behaving properly on all tracks ! Are there any puffs of grey smoke from the exhaust during cranking that might indicate diesel being injected into the cylinders ? Is your fuel actually fuel ? Sounds daft I know but I've seen water contaminated fuel where, when it's been stood for a while, the water and diesel separate and you get a layer of water at the bottom of the tank where the fuel pickup is. Everything looks OK, pressure, flow etc... but no way you'll ever get it to start 
If you have air in the fuel rail it can take some clearing, I've had this a few times when I've not switched fuel tanks soon enough, allowing the tank I'm using at the time to run dry. The only way to clear it and get the engine started is to use full throttle while cranking. This should clear the air lock quicker than normal starting although it can still take a while. The 5+ pumps of the throttle thing only primes the fuel system up to the FPR but doesn't clear air between the FPR and the injectors in the rail. http://www.yorkshireoffroadclub.net/ |
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12th Apr 2016 10:07am |
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| GABERCRO Member Since: 10 Mar 2016 Location: Cumbernauld Posts: 15  
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The TD5 does not have a stop solenoid. I've cleaned every earth point on the vehical+ the lightning rod in the back of the garage
Osilloscope!! God no. 2 wires,battery and bulb  Only joking.
Pressure tested at the regulator feed. Plenty pressure 4 to 5 bar. Can't hear the injectors opening and no smoke at all. Nothing, zilch!! Thats why I think it's electrical. It's not air in the system, I've bleed enough systems to know. |
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12th Apr 2016 11:47pm |
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| pikeykev Member Since: 10 Dec 2012 Location: Hardingstone Posts: 2 
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Little to stop a TD5 from running. One thing is the high speed crank sensor which normally starts to fail and cuts the nine out as you are doing 60mph in the middle lane of th M5 with a caravan on the back in my experience! Still, if it is faulty it will stop the engine, but normally brings up the engine fault lamp.
It is also worth checking that you are recieving a reading from the mass airflow sensor as this can cause issues with starting. Finally, I have heard of issues with the starter motors building up a field and causing problems, the only fix is an expensive swap. What you need is a mate who is willing to swap bits with you to fault find or it will be an expensive job. Good luck with it Kevin 110 TD5 53YM Disco 3 |
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16th Apr 2016 8:28am |
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| GABERCRO Member Since: 10 Mar 2016 Location: Cumbernauld Posts: 15
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Success
Took landy to Auto electrician. He used to work for Jaguar/Landrover, but even he was a bit surprised by what he found. Turned out that it was the immobiliser which was preventing the engine starting. However the ECU did not recognise that this was a fault? Hence, when I was checking it with the Nanocom, it said everything was fine and that it was not immobilised. When I told him that I had the ECU checked and cleaned when I found oil in the red plug, he said it may have been the oil that corrupted the link between the ECU and the immobiliser. All defenders after a certain date were fitted with an immobiliser as standard, but not all of them were connected. This depends on the model and equipment level. The Auto electrician is not sure the oil caused this problem or how the functionality of the immobiliser was changed without the ECU registering it as a fault. I would never have found this fault with my limited equipment. However, he re-programmed the ECU and immobiliser, and the engine fired over first turn of the key. WWWWWOOOOOOHHHHHHOOOOOO  Best £60 I've spent in a while. Thanks for all the in-put guy's, your feed-back is appreciated. Hopefully this will help someone in the future. |
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24th Apr 2016 6:12pm |
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| dorsetsmith Member Since: 30 Oct 2011 Location: South West Posts: 4554 |
good new
and good price £60.00 |
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24th Apr 2016 6:18pm |
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