 | Home > Td5 > Intermittent Start |
 
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| LJMARSDEN Member Since: 08 Jun 2021 Location: Nottingham Posts: 336   
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Inconsistent start feels, probably luck based, alignment of stars and planets and sometimes having everything crossed.
Or alll of the above So whats been replaced in the last 12months Fuel Pump Fuel Filter housing (Gore Machined one) and valves FPR Gasket Injector washer and seals (seat re-cut) New starter motor Crank Position Sensor Last on the list is to check are earths and relays but I don't have RAVE or anything to check which relay is which could someone give me a hand with that please. As I look into the drivers seatbox, From left to right I have two Yellow relays and one Black one, and thats all. Don't know what else to consider... and yeah I've cleaned the ECU plugs as well as already replaced injector loom as well. Cheers 4.0 V8 Defender 90 My Instagram |
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16th Jul 2021 6:51am |
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| kenzle8a Member Since: 12 Feb 2020 Location: None Posts: 1074 
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battery?
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16th Jul 2021 7:02am |
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| LJMARSDEN Member Since: 08 Jun 2021 Location: Nottingham Posts: 336
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Sorry, Should have mentioned the battery is being charged fine 4.0 V8 Defender 90
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16th Jul 2021 8:06am |
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| mark1200 Member Since: 09 Oct 2011 Location: peterborough Posts: 74  
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you have might have already done this but its important that you have a really good earth so i would recheck and clean all the earth points. When it fails to start are you getting any clicking sounds from any of the relays under the drivers seat ? if so that could be there is a fault with the connectors that the relays plug into ?
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16th Jul 2021 9:12am |
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| geobloke Member Since: 06 Nov 2012 Location: Nottinghamshire Posts: 4410
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I have literally just been through this infuriating problem and diagnostic list of things to check.
Turned out to be the relays were just worn, see here: https://www.defender2.net/forum/topic53859-180.html Pull out the relays and open them up, check the contacts for pitting, charring and like in my glow plug relay smoke stains... 
Since replacing the relays she has not failed to start. Although I now have bigger problems...  |
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16th Jul 2021 1:53pm |
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| LJMARSDEN Member Since: 08 Jun 2021 Location: Nottingham Posts: 336
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Thanks for the suggestions - I've just replaced all three relays with some generic ones that are the same AMps and voltage but still not luck.
I'll be checking and cleaing all earth points tomorrow.  4.0 V8 Defender 90
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16th Jul 2021 5:29pm |
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| LJMARSDEN Member Since: 08 Jun 2021 Location: Nottingham Posts: 336
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Yes all relays do click when I'm trying to start it and even the brand new ones
4.0 V8 Defender 90 My Instagram |
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16th Jul 2021 5:31pm |
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| dorsetsmith Member Since: 30 Oct 2011 Location: South West Posts: 4554 |
2002 my TD5 defender wiring
https://1drv.ms/b/s!AtZSoWFHDgnGlGJ6dB05NJC8QFj9?e=OKJjbG Is your engine cranking over ? Is starter relay resaving 12v supply from fuse box ? |
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17th Jul 2021 7:51am |
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| LJMARSDEN Member Since: 08 Jun 2021 Location: Nottingham Posts: 336
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Yeah the engine is crankning fine and battery is charging fine too, I'll have to check the relays
But, it looks like it more of a fueling issue as is struggles to catch but after let's say "sufficient" cranking it will start 4.0 V8 Defender 90 My Instagram |
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17th Jul 2021 2:40pm |
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| LJMARSDEN Member Since: 08 Jun 2021 Location: Nottingham Posts: 336
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Yeah thats always been the process - I have a suspicion that it may be injector washer and seals again, A bit premature since they were already replaced just over a year ago.
I won't be removing those fora few days yet though. 4.0 V8 Defender 90 My Instagram |
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17th Jul 2021 3:09pm |
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| LJMARSDEN Member Since: 08 Jun 2021 Location: Nottingham Posts: 336
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Forgot say thanks for the Electrical diagrams.... Could you tell I was in need of them with all this trouble I'm having  4.0 V8 Defender 90
My Instagram |
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17th Jul 2021 3:15pm |
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| dorsetsmith Member Since: 30 Oct 2011 Location: South West Posts: 4554 |
ok as landy andy priming mod the fuel pump, with the fuel pump running press accelerator pedal five times you see amber engine lamp on the dash flash and fuel pump start and stop 4 times when i have fitted new injector seal and copper washer in the past i fund that having priming fuel system 2 or 3 times the engine still will not fire up (air lock in the injectors stopping the fuelling ) you may also need to floor accelerator pedal when starting the engine this give long PWM to the injectors also Landy Andy air in fuel system have look at your fuel filter head can be problem and also ( air bleed valve and duck bill nonreturn valve letting fuel dram back from head 
Last edited by dorsetsmith on 17th Jul 2021 4:47pm. Edited 2 times in total |
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17th Jul 2021 3:30pm |
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| landy andy Member Since: 15 Feb 2009 Location: Ware, Herts Posts: 5707 
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We’re Land Rover parts used? I’ve read about other makes not working well, or for long. |
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17th Jul 2021 4:21pm |
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| LJMARSDEN Member Since: 08 Jun 2021 Location: Nottingham Posts: 336
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The airbleed and one way we're just items from an eBay store, I might replace them with genuine however the airbleed is quite
 up with debris so it seems either the washers are gone or maybe some corrosion on the tank side of things 4.0 V8 Defender 90
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18th Jul 2021 7:38pm |
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