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Thread: Discovery 4 stopped. Any opinions on reason please?

  1. #11
    Join Date
    Aug 2007
    Location
    Bunbury, WA
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    1,756
    Quote Originally Posted by LRD414 View Post
    I don't believe there's any mechanical difference between TDV6 and SDV6 in the late model 3.0L variants, just a different tune.

    Regards,
    Scott

    PS I hate hearing these stories as an owner of a 2014 TDV6 myself
    Yep I agree.
    I know the OP had a std tune, but its one reason why i won't up-tune my TDV6.
    Chris


    2014 D4 TDV6
    1954 86" (I'll finish it one day.....)
    1980 Stage 1 v8

  2. #12
    Join Date
    Dec 2009
    Location
    Sydney
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    1,221
    Quote Originally Posted by Disco4Dave View Post
    The LR dealer has reported the failure as a spun crank bearing, and a new engine less peripherals is being supplied and fitted under warranty. Here's hoping that no debris has got past the oil filter to the turbo bearings.
    I was aware of the history of bearing issues and resulting crank failures with this family of engines, but had believed it was mainly a problem with the TDV6 version, and much less so with the SDV6 variant.
    We should have the car back in just over a week, and I look forward to getting back on the road.
    All the diesel V6s can have this problem. Doesn't seem to matter how often oil and filters are changed. One of the reasons why a prefer the petrol V8.
    Fuji white RRS L494 AB

  3. #13
    Join Date
    Dec 2011
    Location
    Adelaide
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    602
    Quote Originally Posted by Disco4Dave View Post
    The LR dealer has reported the failure as a spun crank bearing, and a new engine less peripherals is being supplied and fitted under warranty. Here's hoping that no debris has got past the oil filter to the turbo bearings.
    I was aware of the history of bearing issues and resulting crank failures with this family of engines, but had believed it was mainly a problem with the TDV6 version, and much less so with the SDV6 variant.
    We should have the car back in just over a week, and I look forward to getting back on the road.
    Wow. To use an overused expression these days, you dodged a bullet!
    Glad the dealer stepped up with the warranty replacement, but I would be concerned with bits of metal in the ancillaries and tubes.
    2006 Disco 3, 4L V6 Petrol SE
    No 5 Trailer ARN 177-295
    SOLD Engineers Trailer - no id
    SOLD RAAF 231194 Perentie 110 GS - SIR ANGUS

  4. #14
    Join Date
    Mar 2016
    Location
    Perth
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    1,579
    There have been cases of D5 engines also failing so the issue is still real sadly.
    2010 TDV6 3.0L Discovery 4 HSE
    2007 Audi RS4 (B7)

  5. #15
    Join Date
    Aug 2007
    Location
    Bunbury, WA
    Posts
    1,756
    Quote Originally Posted by DiscoJeffster View Post
    There have been cases of D5 engines also failing so the issue is still real sadly.
    I was in at my local LR dealer a couple of weeks ago. (Mine was off the road for a month having a cracked inlet manifold replaced under extended warranty (yay).) The service manager pointed to a MY14ish D4 parked next to mine. He said it had an injector get stuck open, which hydraulic'd the cylinder and spat a leg out of bed. New engine time... :-(
    Chris


    2014 D4 TDV6
    1954 86" (I'll finish it one day.....)
    1980 Stage 1 v8

  6. #16
    Join Date
    Jan 1970
    Location
    NSW South West Slopes
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    9,422
    Quote Originally Posted by Disco4Dave View Post
    Here's hoping that no debris has got past the oil filter to the turbo bearings.
    If a turbo is discovered damaged when the engine is started then the turbo(s) will have to be replaced as part of the repair. However unless the turbos had been working hard at the time then they should be OK even if oil pressure was reduced substantially.
    MY12 RRV 4.4 TDV8 AB, +LLAMS, +e-diff, +ACC stop/go. Produce LLAMS for LR/RR, Jeep GC/Dodge Ram
    VK2HFG and APRS 2m rx igate

  7. #17
    Join Date
    Jun 2016
    Location
    Blue Mountains, NSW
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    Quote Originally Posted by Graeme View Post
    If a turbo is discovered damaged when the engine is started then the turbo(s) will have to be replaced as part of the repair. However unless the turbos had been working hard at the time then they should be OK even if oil pressure was reduced substantially.
    Thanks Graeme. Unfortunately I was towing approx 1.5t uphill when the engine failed, so there would have been some load on the engine.
    The dealer technician says they will clean and inspect the turbos before refitting and then testing. Hopefully any issues will be apparent.
    2016 Yulong White D4 SDV6 Landmark
    2011 Mazda MX-5 PRHT
    1998 Mazda MX-5 race car "OMG" => Hers
    2006 Mazda MX-5 race car "The Beast" => His :-)

  8. #18
    Join Date
    Jun 2016
    Location
    Blue Mountains, NSW
    Posts
    116
    The Disco is back, with a new engine.
    They reused most of the peripherals from the old engine, including the turbos.
    When cut open, the old oil filter contained some shrapnel. From that I take that the oil pump was still working as the crank bearing failed, and that there must be some risk to the peripherals such as the turbos. They assure me that the peripherals were inspected and tested before being refitted.
    I was told by the dealer that the new engine would have a 1 year warranty, but after querying that directly with JLR I learner that in the case of a warranty replacement, it is only covered by the balance of the factory warranty. In my case that is 2 weeks from now. JLR said that if any of the peripherals failed in the near future, after the factory warranty expired, they would "take care" of me. They would not be more explicit on what that means.
    There are 2 matters concerning the engine change work that concern me.
    The car was ready a day later than planned as it had a coolant leak after the engine swap. This was due to a pinched o-ring on the water pump transferred from the old engine. My concern here is that this may indicate a lack of care when fitting the pump.
    The other matter is minor but still concerning. The car has an ARB bullbar which of course needed to be removed to get the body off. That bullbar hasyellow blinkers and white DRLs. When collecting the car, I did a walk around with the engine running and noted that on one side, the yellow blinker was on while the white DRL was not. Putting on the blinkers resulted in the DRL flashing. So, they have mixed up the wiring on those lights on one side. No big deal. But surely someone should have noticed that in the 5 days they had the car after the engine swap was completed. To me it shows a lack of attention and care.
    The car does to a LR indi next week for an inspection to catalogue any issues to raise before the warranty expires. I wonder what they will find!
    2016 Yulong White D4 SDV6 Landmark
    2011 Mazda MX-5 PRHT
    1998 Mazda MX-5 race car "OMG" => Hers
    2006 Mazda MX-5 race car "The Beast" => His :-)

  9. #19
    Join Date
    Dec 2017
    Location
    wandin nth vic
    Posts
    192
    Thats interesting about turbo inspection as when i was fault finding a turbo issue with my l322. The turbo specialist told me he would not dismantle turbo to inspect if there were any faults without replacing seals. So you think they would at least replace seals or not inspected thoroughly.

  10. #20
    Join Date
    Sep 2014
    Location
    Baldivis WA
    Posts
    463
    When my D4 had one of its turbo s replaced under warranty it was a body off job. I also have an ARB bar, plus Anderson plug, Tekonsha brake controller etc. They got the wiring for the bar lights right, but not the Anderson or brake controller. JLR were good enough to allow me to take it to my auto electrician that had fitted these items originally and covered the costs to redo it all correctly. I reckon that's pretty good. The JLR mechanics are not aftermarket accessory fitters.

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