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Does your TD5 misfire when warm?

Discussion in 'Common Faults and Questions' started by ratty, Apr 24, 2009.

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  1. ratty

    ratty I'm not special I'm limited edition

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  2. CharlesY

    CharlesY Well-Known Member

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    It's a pity that Injector Harness fitting instruction hadn't been proof-read before being published.

    There are some glaring language errors in it, such as "your" meaning "you are", which should be "you're" as we all know.

    It is such a good piece, but a pity it's spoiled by poor written English.

    It is our own language after all, so we should be able to write it down correctly.

    Or, am I being an old fussy bastard?

    CharlesY
     
  3. The Mad Hat Man

    The Mad Hat Man Well-Known Member LZIR Despatch Agent

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    ya wot?

    well volunteered, CharlesY:behindsofa:
     
  4. ratty

    ratty I'm not special I'm limited edition

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    I wouldn't say YOUR being fussy.;)

    :D:D:D
     
  5. CharlesY

    CharlesY Well-Known Member

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    GGGGrrrrrrr.......... !

    You're getting only 2 out of 10 for that one! :mad:


    Might be time to change my landyzone name ... to BoringOldFart perhaps?

    CharlesY
     
  6. The Mad Hat Man

    The Mad Hat Man Well-Known Member LZIR Despatch Agent

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  7. CharlesY

    CharlesY Well-Known Member

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    Sure, I could join that!

    I am looking out for a new car to upgrade from my Model T Ford.

    Wahddya think about this one? It's got all the latest features.

    CharlesY
     

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  8. Iggy Viljoen

    Iggy Viljoen New Member

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    Hi guys, my td5 misfires and has all of these three symptoms. There is no oil in the plug or the ecu. Where els do you recommend i look for the problem?
     
  9. Bulldog8

    Bulldog8 New Member

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    My td5 runs sluggish changed the fuel filter.airflow mass meter.cleaned the actuator at the turbo put a new air filter on it but a unplugged the ecu to find oil in the red plug do any of yous recommend changing the injector harness as i have heard this could be the problem running out of ideas here thanks guys
     
  10. The Mad Hat Man

    The Mad Hat Man Well-Known Member LZIR Despatch Agent

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  11. Bulldog8

    Bulldog8 New Member

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    Thanks buddy cheers it was really oily when a removed it and the plug going into the harness do you think i might need an new ecu if a open it up and find its coated with oil as a found out i might need a new one and programmed
     
  12. Si Click

    Si Click Well-Known Member

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    A diagnostic check will show if the problem is the ECU or not. By all means open it up and clean out any oil with a suitable solvent (I favour brake or carb cleaner as contact cleaner seems to leave a residue), but don't condemn it unless you have evidence that the ECU is the issue. The chances are it will be fine. You do need to change the injector harness though; the issue is such a characteristic of the TD5 that changing it at a suitable interval is almost a service requirement.
    If this does not cure your sluggishness then you need to get a diagnostic check and look at the live data - MAF vs MAP data, injector performance etc. If nothing shows up then fuel pressure might be your issue and you will need put a fuel pressure gauge into the high pressure line to see if the pump output is correct.
     
  13. Bulldog8

    Bulldog8 New Member

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    Thanks guys will give it a try
     
  14. PaulHDisco2td5manual

    PaulHDisco2td5manual New Member

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    Hi all, I have a similar issue which just started occurring recently after running perfectly! My car is a Disco 2 TD5 manual with 203k on the clock. She starts and idles with no issue however there is white exhaust smoke when revved. I can drive at low speed with no visible smoke or misfiring but as soon as I start to increase load the misfiring and rough running starts and will only rev to a certain level. I have replaced the injector harness and gasket and have cleaned the red Ecu plug and socket which did have oil in it but it has made no difference. I haven’t cleaned inside the Ecu as I don’t have a tool to open it. I have ordered new glow plugs and MAF sensor hoping if I replace these it will solve the issue! Has anyone else had this issue and found any other causes please?
     
  15. Si Click

    Si Click Well-Known Member

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    Sounds like you might have a blown head gasket.
     
  16. PaulHDisco2td5manual

    PaulHDisco2td5manual New Member

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    Thank you for your reply. Well that’s obviously not good, if you’re right. What other symptoms should I be seeing or hearing
    If it is the head gasket?
     
  17. PaulHDisco2td5manual

    PaulHDisco2td5manual New Member

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    I’m not sure if it still misfires when warm as haven’t driven it long enough to properly warm up due to the misfire and loss of power
     
  18. Si Click

    Si Click Well-Known Member

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    Head gaskets can fail in several ways. If yours has gone, it sounds as though coolant could be getting into the combustion chamber at high revs - this gives white exhaust as the coolant turns to steam. If this is the case then the coolant level will be going down and you might find water contaminating the oil.
    If the coolant level is constant, then the HG could be fine; but if you have not changed the oil recently, then this would be a good time to do it and look for water contamination. HG failures can also let oil into the coolant (you will see dark sludge in the reservoir - also caused by faulty seal in the oil cooler), or can let combustion gas into the coolant (you will see rigid, hot hoses full of hot gas).
     
    PaulHDisco2td5manual likes this.
  19. PaulHDisco2td5manual

    PaulHDisco2td5manual New Member

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    Thank you, I will have a look! Appreciate the advice
     
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