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HELP! Fault Code Help Required (O/T becasue it's a TD5!)
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James W
Joined: 27 Mar 2008
Location: Wirral, UK
Posts: 13
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| HELP! Fault Code Help Required (O/T becasue it's a TD5!) |
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Hi all,
Hope this isn't too off-topic. I also hope it's 'on-topic' for the 'off-topic' bit 
I've currently got a misfire on my Disco 2, and the computer reading shows a fault code on injector #1.
I'm reluctant to change the injector yet because it's only intermittent. It only occurs after approximately 30mins of driving, but once occuring, it won't go away until the vehicle cools down again. Starts fine, no smoke, and no smoke when misfiring, just vibration (very noticable when stationary). Also, when misfiring, there seems to be a slight loss in power (I'd say about one fifth  ) If an injector's broken - why isn't it broken all the time? Especially at startup/running cold?
I know of several potential problems, but by eliminating the lack of cold-start misfire I think it rules a lot out. (for example fuel pump, wastegate actuator sticking). I think because of it occuring after a full warm-up it should most probably be temparature related once the engine is fully running at top temp.
So finally - to get to the point. I need to understand whether a fault code for Injector #1 is actually caused by injector#1 'saying' it has a fault. Would the ECU register a fault for injector #1 because of another problem that caused #1 to misfire?
I am still thinking about the possibility of MAF and/or MAP sensors, crank speed sensor, and wiring looms being at fault, but if the code that's showing is literally a cry for help from injector #1, I can save myself some time and hopefully money 
Sorry for the long post, I have baffled my local friendly mechanic and came here because I know you're more used to the 'digital' age of Land Rovers. I've been chased from some other LR forums I go on by 200TDi drivers for talking 'witchcraft' 
Thanks in advance 
James
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 Tue Jul 22 2008 9:52am |
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Bodsy
Joined: 06 Nov 2006
Location: Home, home on the range........
Posts: 5468
 
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| Re: HELP! Fault Code Help Required (O/T becasue it's a TD5!) |
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James W wrote: I've been chased from some other LR forums I go on by 200TDi drivers for talking 'witchcraft'
I can't help you I'm afraid, but just thoiught that this bit was particularly funny TDV6 HSE Black, Black Wheels /MTR's(in the shed!), Black RRS front/rear LR badge (tbf) Black Leather, Black Glass, Black TowB, Shiny Tasmods, Dull Mantec, White (& Orange) Reflective D3 Sticker, Black steering wheel badge, black air intake. Optima & Traxide dual battery setup.
Need black RRS wheel centre caps.
Now with added Engel.....
We D3, therefore we are..........
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| Tue Jul 22 2008 10:24am |
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AndrewS
Tarquin of the Desert
Joined: 06 May 2005
Location: Earth
Posts: 5989
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Pop the cover off the battery, towards the front of the casing the battery is in you will see a grey box (the ecu). about 50mm thick x 150mm x 150mm its held in place with a few screws in the top. Remove the connectors and I expect you will see black oil. Clean this oil out re connect and see how the engine runs. For use of a 4x4 site and driver training pm me 
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| Tue Jul 22 2008 11:04am |
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James W
Joined: 27 Mar 2008
Location: Wirral, UK
Posts: 13
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Unnecessary quote removed
Many thanks for the suggestion - I had already checked this.. a smear of oil at the engine end of the loom around the connector at the head, but no traces of oil in the red plug at the ECU end, unfortunately. I've discovered that the injector harness leak is a very common fault though...! But on mine, there's no oil reaching the ECU.
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| Tue Jul 22 2008 12:06pm |
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SteveNorman
Joined: 14 Oct 2005
Location: Somerset
Posts: 82
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Have you got the fault code description?, as it could be injector open circuit, peak charge time too long or a couple of other choices.
Has the loom under the rocker cover ever been renewed?
Check oil ingress on the main red ecu connector (as described).
Your explanation of the injector cutting out when warm does lend me to think it is probably an injector issue, as opposed to a loom fault, but as the loom is so inexpensive it might be worth a shot first.
A new injector has to been coded when fitted.
If you come back with a fault code
Regards
Steve
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| Tue Jul 22 2008 1:08pm |
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Gareth
Site Moderator
Joined: 07 Dec 2004
Location: Bob the Builders 'ere
Posts: 9641
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I can't offer any further suggestions, but so long as its off-topic in Off-Topic then its fine by me  Silver TDV6 HSE
Pepper White Cooper S Convertible
Old English White MGB GT
Ex Military 109 Series 2a Soft Top
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| Tue Jul 22 2008 1:24pm |
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Bodsy
Joined: 06 Nov 2006
Location: Home, home on the range........
Posts: 5468
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If you've got an off-topic post in the off-topic area, does that make it on-topic & not off-topic.......? TDV6 HSE Black, Black Wheels /MTR's(in the shed!), Black RRS front/rear LR badge (tbf) Black Leather, Black Glass, Black TowB, Shiny Tasmods, Dull Mantec, White (& Orange) Reflective D3 Sticker, Black steering wheel badge, black air intake. Optima & Traxide dual battery setup.
Need black RRS wheel centre caps.
Now with added Engel.....
We D3, therefore we are..........
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| Tue Jul 22 2008 1:34pm |
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Gareth
Site Moderator
Joined: 07 Dec 2004
Location: Bob the Builders 'ere
Posts: 9641
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Nah, that reverse pshycology crap doesn't work here... You can't go 'more' OT than an OT post!
Oooh WTF I don't care, I'm on holiday. I wish you could all see what I'm staring at by the pool Silver TDV6 HSE
Pepper White Cooper S Convertible
Old English White MGB GT
Ex Military 109 Series 2a Soft Top
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| Tue Jul 22 2008 1:40pm |
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al cope
Joined: 08 Nov 2005
Location: Oldbury, WM
Posts: 1603
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water?
Al TDV6 S - Tonga with Ebony
(and 19" RRS alloys, satnav & DVD)
Remember - You can only walk so far into the wilderness before you are walking out again
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| Tue Jul 22 2008 2:01pm |
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AndrewS
Tarquin of the Desert
Joined: 06 May 2005
Location: Earth
Posts: 5989
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Gareth wrote: I wish you could all see what I'm staring at by the pool
 The disco3 site by the looks of it  For use of a 4x4 site and driver training pm me
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| Tue Jul 22 2008 2:06pm |
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Bodsy
Joined: 06 Nov 2006
Location: Home, home on the range........
Posts: 5468
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Doesn't it go back to my earlier post about engineers.......... 
TDV6 HSE Black, Black Wheels /MTR's(in the shed!), Black RRS front/rear LR badge (tbf) Black Leather, Black Glass, Black TowB, Shiny Tasmods, Dull Mantec, White (& Orange) Reflective D3 Sticker, Black steering wheel badge, black air intake. Optima & Traxide dual battery setup.
Need black RRS wheel centre caps.
Now with added Engel.....
We D3, therefore we are..........
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| Tue Jul 22 2008 2:17pm |
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Gareth
Site Moderator
Joined: 07 Dec 2004
Location: Bob the Builders 'ere
Posts: 9641
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No Andrew, the pda is just my cover. What I am really looking at is tall, slender, curvy, golden, dripping moisture steadily onto the floor, its heaven I tell ya Silver TDV6 HSE
Pepper White Cooper S Convertible
Old English White MGB GT
Ex Military 109 Series 2a Soft Top
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| Tue Jul 22 2008 2:25pm |
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James W
Joined: 27 Mar 2008
Location: Wirral, UK
Posts: 13
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A pint of lager in a Stella pint glass?
...Anyway - thanks very much for the help so far... I have just ordered a replacement injector loom (and new rocker cover gasket) so will give that a go this weekend. Like I said before, there's no oil at the ECU end, but maybe it's shorting further up.
The fault code given was an open circuit one - not sure if this helps?
Finally... Just had an email back from a very helpful injector refurb. company - They said that if it's not failing all the time and only when warm, that it doesn't sound like the injector itself..
Will keep you updated
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| Tue Jul 22 2008 2:32pm |
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SteveNorman
Joined: 14 Oct 2005
Location: Somerset
Posts: 82
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James,
Unfortunatly I disagree, most injectors I have had failed on TD5 tend to fail when warm, going open circuit.
I think you will be into an injector there, but worth the loom try first.
Regards
Steve
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| Tue Jul 22 2008 3:20pm |
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James W
Joined: 27 Mar 2008
Location: Wirral, UK
Posts: 13
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Very interesting - I really appreciate your opinion, especially as it's the only one I have been able to get based on experience! Many thanks!
I'll change the loom (I suppose as it's leaking anyway it's not money wasted!) and will remain open minded about it fixing the problem... Next stop, try and locate a "blue-top" (yes, they come in three specific colours ) TD5 injector at a 'reasonable' price
Reckon I should be so brave as to replace the injector myself (Happy to do the loom, but is the injector a step too far?) and simply pay the mechanic to program the five-digit calibration code in for me to save money on labour? Seems silly to have the top off the engine to change the loom and take it off a week later to change the injector!!
Thanks all...
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| Tue Jul 22 2008 3:26pm |
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