 | Home > Td5 > TD5 2003 Defender intermittent non starter |
 
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| AndyT66 Member Since: 19 Sep 2016 Location: Bedford Posts: 149   
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Hello All,
After many years of saving I am now the proud owner of a 2003 Defender with, as I am fast discovering, all the usual things sent to test us including three fuel pressure regulators (2 after market and 1 OEM which solved the leak). My latest problem is an intermittent starting fault which occurs randomly and unexpectedly, the last event was at the petrol station (good timing I must say). On a good start when turning the ignition the engine management light, coil light etc illuminate and the fuel pump whirs in the back – bingo off we go.  Click image to enlarge The Non start event includes no engine light, no coil light and temperature gauge that goes to the red ,despite a cold engine. The fuel pump remains silent, the engines turns but fails to spring into life. Click image to enlarge Just to note a couple of months ago I had the injector harness replaced after she went into safe mode, i subsequently found oil in the red ECU plug (oh joy) - it's still as dry as a bone today? A few previous posts i have read mention an ignition relay as a possible cause? Any possible suggestions as to the cause would be gratefully received.  I can cope with rotting doors etc but engine electrics are a dark science i'm afraid. 
thanks in advance all Andy |
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5th Nov 2016 8:11pm |
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| AndyT66 Member Since: 19 Sep 2016 Location: Bedford Posts: 149
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Many thanks for the reply, I'll give that a go and let you know
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5th Nov 2016 9:07pm |
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| 4RF RDS Member Since: 19 Jul 2015 Location: Ottawa Posts: 954  
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Could be time to pull the starter and rebuild the starter motor contacts. Do a search on this site for what to do, easy to complete by yourself for about £20 quid and a half hour work. 2010 Range Rover MkIII Autobiography Super Charged (Idris)
2003 Range Rover Mk III (Desmond FitzWilliam) 2000 Defender 110 CSW TD5 (CTX) 1992 Range Rover Classic (Lizzy) 1972 Series III 300 Tdi (Stanwood) 1967 MGB GT Every normal man must be tempted at times to spit on his hands, hoist the black flag, and begin to slit throats. H. L. Mencken (1880 - 1956) |
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6th Nov 2016 1:44am |
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| pj2106 Member Since: 20 Dec 2012 Location: Huntingdon AKA The Shire Posts: 1500  
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Firstly try cleaning up the live/neg cable connectors on the starter motor they get full of crap had this on mine also check starter relay and crank sensor had both these too 2008 110 2.4 XS Utility (Hagrid)
2002 90 TD5 Hardtop (Sully) Sold 1998 300TDi D1 (Billy) Sold |
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6th Nov 2016 8:27am |
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| miker Member Since: 13 Sep 2015 Location: Surrey Posts: 1768 
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If it's turning but not firing then won't be starter. Do you have a copy of the electrical schematics? May be helpful to start tracing wires. |
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6th Nov 2016 1:32pm |
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| 4RF RDS Member Since: 19 Jul 2015 Location: Ottawa Posts: 954
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 2010 Range Rover MkIII Autobiography Super Charged (Idris)
2003 Range Rover Mk III (Desmond FitzWilliam) 2000 Defender 110 CSW TD5 (CTX) 1992 Range Rover Classic (Lizzy) 1972 Series III 300 Tdi (Stanwood) 1967 MGB GT Every normal man must be tempted at times to spit on his hands, hoist the black flag, and begin to slit throats. H. L. Mencken (1880 - 1956) |
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6th Nov 2016 4:45pm |
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| dorsetsmith Member Since: 30 Oct 2011 Location: South West Posts: 4554 |
Crankshaft position sensor can cores non starter as the ecu has no information of engine rpm
check wiring to it and the plug driver side engine flywheel end also remover it clean of swart as it has magnetic core https://www.lrdirect.com/NSC100790-Sensor/ Last edited by dorsetsmith on 29th Apr 2019 6:44am. Edited 3 times in total |
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6th Nov 2016 5:10pm |
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| gazman Member Since: 17 Aug 2015 Location: Liverpool Posts: 652 
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their is something wrong of the temperature guage is in the red. I had a issue with mine a few months back and it would cut out intermittently, everytime it did the water guage went into the red like the one in this post. Knocking the main relay got it running again. I cleaned and tightened the contacts and it was fine afterwards 2014 - current ..... 2003 defender td5 90 (my car)
2009 - current .... 2005 zx10r |
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6th Nov 2016 6:10pm |
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| AndyT66 Member Since: 19 Sep 2016 Location: Bedford Posts: 149
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Thanks all for the info for above, much appreciated. I'm going to start with the main relay, possible the easiest option ! Looking at the schematics it appears the main relay, fuel pump and glow plugs are interconnected? She's been OK today as luck would have it, though I am now actively listening for a relay click under the seat as I turn the ignition on. Unfortunately it will be next weekend before I can delve into this. Thanks again , Andy
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6th Nov 2016 9:03pm |
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| resnonverba Member Since: 08 Aug 2015 Location: Lisboa Posts: 4  
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I had this symptoms too. It was the Main relay loose on the rack.
It was hard to reproduce. I had to pull out completely the relay rack and shake it outside with the engine running to reproduce the failure. I tightened the contacts a bit with the tip of a screwdriver and no more failures! |
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10th Nov 2016 6:35pm |
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| AndyT66 Member Since: 19 Sep 2016 Location: Bedford Posts: 149
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Many thanks Resnonverba I'm definitely heading to that relay first at the weekend. Ps I had a great holiday this year in Lisboa, lots of well looked after defenders as well
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10th Nov 2016 8:34pm |
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| resnonverba Member Since: 08 Aug 2015 Location: Lisboa Posts: 4
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...see also the condition of ECU ground ring terminal. Try to clean it with a contact cleaner. Because the temperature gauge behavior is not main relay related, it's a earth issue.
Glad you liked Lisboa. We have some dedicated fans here. |
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11th Nov 2016 6:41pm |
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| AndyT66 Member Since: 19 Sep 2016 Location: Bedford Posts: 149
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A rather belated update, the starting problem did stem from the main relay, a quick flick of the relay with my finger activated the fuel pump and coil light. Thanks all. Picture of offending relay under screwdriver.
Click image to enlarge |
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11th Dec 2016 7:36pm |
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| jst Member Since: 14 Jan 2008 Location: Taunton Posts: 8152 
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great its sorted and even better you responded to say what the issue was, top man. Cheers
James 110 2012 XS Utility 130 2011 M57 bespoke Camper 90 2010 Hardtop 90 M57 1988 Hardtop |
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11th Dec 2016 7:45pm |
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