Richardince wrote:

There were very high winds at the time whilst going up 25% gradient hill. Could this have been a factor?

A good friend of mine had this happen to his L322 TDV8 when he was on holiday in Italy. Luckily he was covered by an extended warranty. I think his was a 3.6 with a fairly high mileage.

Just had a quote of £26,835 including Vat

Not happy ...

Quote:

Just had a quote of £26,835 including Vat

Not happy ...

I went out and bought a replacement Range Rover (but mine was an L322 TDV8) Land Rover Addict
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2009 5.0V8SC Autobiography
2006 4.2V8SC Autobiography
2004 4.4V8 Vogue

£26k jeez I bet youre not happy, blimey thats horrific. Have you tried a good independent such as Green Oval, see what they can do, used engine, replace etc. Im gutted for you, thats terrible. BMW i3 Electric Car
2012 Full Fat RR 4.4 TDV8 (now gone)
2006 VW Touareg 3.0 TDi V6

JCW wrote:

Does this very unfortunate event point to the turbo drain mod on all 4.4 TDV8's being more preventative than just dealing with the undesirable smoke when the second turbo cuts in, or have I misinterpreted the potential source of the oil entering the combustion cycle?

From what I understand about the drain problem, it wouldn't do it anyway. It really needs a catastrophic failure of the turbo seals to put a substantial amount of lubrication oil into the intake. Generally they empty the sump in around 20 to 30 seconds or thereabouts. The drain mod doesn't have anything like this amount of oil in play prior to the mod. BMW i3 Electric Car
2012 Full Fat RR 4.4 TDV8 (now gone)
2006 VW Touareg 3.0 TDi V6

Quote:

There was a (slightly odd) report here of a 4.4TDV8 on a 2010-11. I can't find it but the member talked about overrunning (is that what it's called?)

It was from a new member and the group here was asking for more info. The consensus ended up agreeing that the member's mechanic was actually referring to the Turbo Drain Mod which doesn't end up with the engine 'running away'.

I have decided to build an automatic kill facility for mine to close the throttle butterfly, as I did for my TD5 D2. I had hoped that the ecm would close the butterfly in times of uncontrolled revving, albeit with the ignition still switched on, but obviously the butterfly is not being closed other than to increase airflow through the EGR valve as required.

The TD5 would keep idling if its butterfly was closed using my kill facility but choked immediately if the throttle was opened or if it was already revving hard with an open throttle. The TD5's kill facility was set to be activated if oil pressure was lost (the common oil pump bolt coming loose event) or manually as an anti-theft device.

I have access to a spare 3.0 TDV6 throttle housing (the 3.0 and 4.4 use the same physical ecm) so will determine a suitable pwm signal to ensure that the butterfly is firmly closed. I plan to close the butterfly for 30 seconds (probably requires less than 5 seconds to choke the engine) at each ignition-off instance so that a kill switch is not required to be operated, only that the ignition be switched off, which although takes a few seconds whilst the vehicle is still moving, is likely to be the automatic driver reaction to an engine revving uncontrollably.

AJGalaxy2012 wrote:

From what I understand about the drain problem, it wouldn't do it anyway. It really needs a catastrophic failure of the turbo seals to put a substantial amount of lubrication oil into the intake. Generally they empty the sump in around 20 to 30 seconds or thereabouts. The drain mod doesn't have anything like this amount of oil in play prior to the mod.

Its only my view and I could be completely wrong, I'm not a betting man but Id put my wages on this one. BMW i3 Electric Car
2012 Full Fat RR 4.4 TDV8 (now gone)
2006 VW Touareg 3.0 TDi V6

Sure you're right, given how many unmodified turbo drain 4.4 tdv8's out there but catastrophic engine failure / runaway engines seemingly very rare.

I completely agree, in my view IF diesel runaway could result from the turbo drain problem, Land Rover would have to do a safety recall, the potential danger would be immense. BMW i3 Electric Car
2012 Full Fat RR 4.4 TDV8 (now gone)
2006 VW Touareg 3.0 TDi V6

LR replaced many 3.0 TDV6 secondary turbos when early D4s smoked because they considered that the turbos were faulty before changing their view that the problem was resolved by changing the drain to go directly to the sump. My D4 had 1 replaced then later was in line for its 2nd well after end of warranty but I fitted the revised drain myself instead. If the drain is not totally free then the oil will exit via the the seals, which really aren't seals, just a normally harder way for the oil to escape.

Engine has now been examined to confirm metal particles in the oil and larger fragments in the oil filter. New engine required.
What effect would the runaway engine have on the drivetrain?