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Freelander 2 (LR2) Freelander 2 diesel engine problem. Now running, but still with a misfire.

Discussion in 'Land Rover Freelander' started by Nodge68, Jul 15, 2020.

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  1. lynall

    lynall Well-Known Member

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    My experience is an ustable idle, but like lots of modern stuff, one fault can cause weird issues elsewhere.

    Just had a quick search on the d3 forum for oil temp sensor, results were strange, unstable idle/stalling/trying to stall/strange temp readinsgs on the dash and so on, so you never know?
     
  2. Nodge68

    Nodge68 Well-Known Member

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    Ok. So I'll see if I can get the live data from the ECU on oil and coolant, so I can compare them directly.

    The I930 should work for that I think.
     
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  3. jedi

    jedi Well-Known Member

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    They probably just spray some cleaning fluid through them and call it a refurb.....just a thought is it worth recoding all 4 injectors again, in case something was missed???? Is this possible??
     
  4. lynall

    lynall Well-Known Member

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    I think anything common rail is pretty much new only injector wise, there are some vids on youtube where a guy is adjusting the pressures on common rail injectors back to factory spec, but if the nozzle has had it then yes the pressures may be correct but the rest wont be.

    I think Nodge needs to estabilish 100 percent that he has electrica; power at the injector/s when one or more cuts out, then that will eliminate ecu/wiring or the injectors themselves.

    I ummed and aahed for months before buying the new ones for my D3, 1250 quid on a 4k car is a big ask of anyone, I like it I know it I trust it so I bought them.
     
  5. Nodge68

    Nodge68 Well-Known Member

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    Annoyingly the diagnostic software doesn't show the current injector codes, so I can't check them against the code tab on the injectors. I know when I swapped No 2 and No3 over, the cold misfire didn't change, and the engine smoked loads, so I assume the coding to be correct.

    I've got an apparently working injector arriving this week to try out.
    I tend to agree, it's just the cost of new injectors, which is rather steep. :(
     
  6. SWalker

    SWalker Active Member

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    I ran into a dead end trying to get mine refurb'd - in the end up i got tested ones from a breaker i was told about on here.
    None of my codes now match up - my foxwell can read, but runs into a security issue when trying a re-program hence the need for the SDD.
     
  7. Jayridium

    Jayridium Well-Known Member

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    Is my memory mischievously making a monkey out of me, or didn't your wife picl up a set of reconned injectors on eBay when you first bought the car?
     
  8. Nodge68

    Nodge68 Well-Known Member

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    No. She got a set of second hand injectors from some bloke on Facebook. None look to be in working condition, and 1 is even broken where the 10 digit code should be.

    So the broken one will be pulled apart so I can work out how they work, and the other 3 will probably go in exchange for some refurbished injectors.

    I've got a guaranteed working second hand one commit this week, which I'm hoping will help me identify the faulty injector.
     
  9. Jayridium

    Jayridium Well-Known Member

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    That bloke sound like a right gent :confused: - at least she tried...
     
  10. Nodge68

    Nodge68 Well-Known Member

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    She did, but unfortunately she didn't know what she was buying, but never mind, it's only money. :confused:
     
  11. lynall

    lynall Well-Known Member

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    I have had an idea dah dah! cheap as well.

    Get one of these temp sensors and thermocouple, cable tie thermocouple to injector and watch temperature until it runs on all four, do the same for each injector until you work out which cylinder is showing the odd/low temperature, then swap problem injector with known good sylinder injector and measure temps again, and see if fault moves with injector (injector faulty) or stays on the same cylinder (wiring/ecu/mech fault).

    https://www.ebay.co.uk/itm/Digital-...896904?hash=item2f2f5a19c8:g:w3oAAOSwWVFcuJT3

    Edit its a K series thermocouple, available in loads of different lengths/styles.
     
  12. Nodge68

    Nodge68 Well-Known Member

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    That's not a bad idea. I have a duel probe temperature monitor, with matching clamp on K type thermocouples, so I can monitor 2 injector temps at the same time.

    I might try that. Thanks for the suggestion.
     
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  13. andyfreelandy

    andyfreelandy Well-Known Member

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    Conducted heat may confuse this test?
    Worth a go though. Good thinking!!
     
  14. Andy Warren

    Andy Warren Active Member

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    From cold though the 3 that are running ok should run hotter initially, just have to be quick swapping from injector to injector.
     
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  15. lynall

    lynall Well-Known Member

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    I was mainly thinking its cheap i like cheap, especially if it actually provides clues.
    I would hazard a guess so long as you write al the temps/times down as they happen it should be apparent which cyl is the odd one out?

    I bought similiar for me boat, and was surprised how quick the reaction time was from ambient to finger temp.
     
  16. lynall

    lynall Well-Known Member

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    I was thinking if no rush, do one injector in the morning, allow a couple of hours to cool then next one and so on, obviosusly take all day but should be accurate ish!

    It may be my imagination but I notice modern car engines seem to cool down real fast once switched off, wheares old crap seemed to stay warm for ages.
     
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  17. Andy Warren

    Andy Warren Active Member

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    Probably down to weight saving keeping engine components as thin/light as possible. Having said that these diesels are still big lumps.:)
     
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  18. jedi

    jedi Well-Known Member

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    What about a 12v bulb on each injector???
     
  19. SWalker

    SWalker Active Member

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    the injectors are controlled with a digital signal - a bulb to them could be like a piece of wire to a bulb.
    Even with a scope i would be going x10 probe (high impedance) so that it does not impact the signal.
     
  20. jedi

    jedi Well-Known Member

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    What about a low wattage bulb? Should not affect injector performance too much, would it?? They should all glow at the same rate, if one glows differently, may indicate a fault on that injector.
     
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