2011 TDV8 4.4. L322
150.000km / 93,250 miles

Hi guys,

For some time I have problems with the TDV8 4.4. 448DT engine. Can't find an existing topic here or using the wrong key words... When driving 120 km/h (60mph) on the highway, the rpm occasionally drops out intermittetly. Stuttering once in a while. Occurs in 8th gear. As soon as I use the S position and switch manually back to 7th gear, there is nothing wrong. There is also nothing wrong if I go above 140-150 km/h (90mph). It seems that a part or sensor is getting the wrong signal and that the signal is interupted for a second. Can't find an error in iCarsoft LR V2.0.

What could it be? I am thinking of:
- Camshaft sensor (had this before with a 1999 BMW 528i, same feeling)
- Crank position sensor (had this before with a 1999 BMW 528i, same feeling)
- Something with the diesel supply (changing fuel filter but don't think this is the problem)
- Air mass meter (but then the problem must also occur with other gears/rpm and that does not happen)

Before I replace all these parts, anyone had an idea or the same problem?

Notice: ZF Service changed the oil last week. Everything was perfect. 2017 Range Rover 4.4 SDV8 Autobiography DPF - 100k miles - Dutch

Could be this

https://www.fullfatrr.com/forum/topic38291...hesitation 2011 4.4 TDV8 Vogue SE
1993 Discovery 1 3.5 V8i

I put up with what I described as a cough at 75-80 mph, but the dealer did the mentioned TSB software update a few years ago and it completely cured it. Been fine ever since.
Mike. G reg 2.5VM Vogue Portofino red 1991- 1999
V reg 2.5td P38 Rioja red 1999- 2006
53 reg td6 Vogue Oslo blue 2006- 2015
11 reg 4.4 TdV8 Vogue SE. Baltic blue 2015- date.
https://www.fullfatrr.com/forum/topic56162...tty+affair

Thanks for that. I will go to the local LR shop to check if LTB00454v2 is updated in my one. When was the technical bulletin published? Update: 11-May-2012

Maybe they can also check if the crankshaft position sensor is logging errors interuption for the last month. I have red about that subject but can't find it again  2017 Range Rover 4.4 SDV8 Autobiography DPF - 100k miles - Dutch

Today I was at the local LR workshop. My RR was not updated with LTB00454v2 so they runa diagnostic test. No failure was recognizable/logged, no failures for the crankshaft position sensor so that saves me a little €500 (446 pounds). The update cost me € 64 (57 pounds) so hopefully my problem is solved...

To be specific:
They re-programmed the PCM (Powertrain Control Module, part LR023239) with the newest software (LTB00454V2).

Technical bulletin LTB00454v2 says it will solve the problem when driving between 60 mph and 90 mph, with an ambient temperature above 10 degrees and in 6th, 7th or 8th gear. 2017 Range Rover 4.4 SDV8 Autobiography DPF - 100k miles - Dutch

Last edited by roel2018 on 19th May 2020 8:50pm. Edited 2 times in total

Keep us posted  Gone to a good home: 2011 4.4 TDV8 Vogue SE Buckingham Blue with Ivory and clear glass = "Rory"
2025MY Defender D350 90 in Silicon Silver on coils
1974 Series 3 Lightweight = "Millie"
Many, many other Landies over the years
My preferred specialist: www.glenrands.co.uk
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Ok. Last year my fattie was updated with LTB00454v2 but yesterday it happens again twice! So, i think i need a new CPS Crank Positioning Sensor.... 2017 Range Rover 4.4 SDV8 Autobiography DPF - 100k miles - Dutch