No worries, i even took my first 4.4 to the dealers to have it checked!

Pld118
perce

There is a software upgrade that will cure this hesitation for you
The fix came out 6 or 7 years ago

If you search the forum, you will find the bulletin number

http://www.fullfatrr.com/forum/topic38291.html
This may help
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 the info Baltic Blue just read through the post looks like its a trip to the stealers as I also experience the hesitation with the throttle response.

I have the same chirping noise on my 4.4 tdv8 when slightly backing off the accelerator. In my case, if I dont squirt a bit of throttle, the car revs will jump back and forward a couple of times quite noticeably.

This feature seems to occur when driving into roundabouts, up hills in a low gear and backing off the accelerator and when in cruise at 110km/hr. Did anyone get to the bottom of this noise? Thinking about blanking and coding out my egr and pulling apart the plenum to clean sensors etc. However, any other guidance would be appreciated!

Cam-Tech-Craig wrote:

Can those of you who are concerned go out in your car and find an incline, then reverse up it covering your brake pedal with your left foot! Even partly applying your brakes to make you rev it higher. This should induce the secondary turbo chatter...

Just wondering if this is what at least some of you can hear? And this phenomenon is normal

The noise doesnt bother me. It is more the surging back and forward like it is hunting. Rocks the car back and forward if you dont catch it.

I will try the incline as well but pretty sure the surging is not supposed to happen.

careyba wrote:

I have the same chirping noise on my 4.4 tdv8 when slightly backing off the accelerator. In my case, if I dont squirt a bit of throttle, the car revs will jump back and forward a couple of times quite noticeably.

This feature seems to occur when driving into roundabouts, up hills in a low gear and backing off the accelerator and when in cruise at 110km/hr. Did anyone get to the bottom of this noise? Thinking about blanking and coding out my egr and pulling apart the plenum to clean sensors etc. However, any other guidance would be appreciated!

careyba wrote:

I have the same chirping noise on my 4.4 tdv8 when slightly backing off the accelerator. In my case, if I dont squirt a bit of throttle, the car revs will jump back and forward a couple of times quite noticeably.

This feature seems to occur when driving into roundabouts, up hills in a low gear and backing off the accelerator and when in cruise at 110km/hr. Did anyone get to the bottom of this noise? Thinking about blanking and coding out my egr and pulling apart the plenum to clean sensors etc. However, any other guidance would be appreciated!

The 4.4tdv8 released in Australia doesnt come with a dpf fortunately!

What did the PCM upgrade cost and is it a dealer only fix?

The PCM update can't be done using the IIDtool so mine was done by the local LR dealer. I had 2 other ecus updated for the total cost of $330 with the justification that the technician couldn't leave the vehicle to do other work for the 2 hour download/update duration.

For those with DPFs, a DPF regen keeps the EGR valve closed when it might otherwise be open to ensure that the excess fuel goes down the exhaust to the catalytic converter rather than get recycled through the combustion chamber, so blocking the EGR valve doesn't impact on a DPF regen at all.

Hi NorthernMonkeyJones,
Did you ever get to the bottom of this old issue from a few years ago? I have exactly as you described and want to resolve it.
Did you, or anyone, update the PCW and did it actually fix that issue? I have a remap and an update would remove that so would incur more cost if I want to re remap the car… and want to avoid that if it doesn’t fix the issue. Currently driving: 2012 L322 SE Overfinch 4.4 tdv8

Past rides:
2014 Audi Q7 3.0d (good riddance)
2010 L322 Autobiography 5.0 Supercharged
2011 L320 HSE 3.0 sdv6
2014 Jaguar XF-RS 5.0 supercharged
2007 BMW 535D
2005 Mini Cooper S

https://www.fullfatrr.com/forum/topic59478.html

Before anyone else says it…
 Currently driving: 2012 L322 SE Overfinch 4.4 tdv8

Past rides:
2014 Audi Q7 3.0d (good riddance)
2010 L322 Autobiography 5.0 Supercharged
2011 L320 HSE 3.0 sdv6
2014 Jaguar XF-RS 5.0 supercharged
2007 BMW 535D
2005 Mini Cooper S

https://www.fullfatrr.com/forum/topic59478.html

Mine does it as well, I took a short video of it. Sounds like turbo flutter or turbo chatter to me. Back in the day when I used to modify cars this is the noise my turbos made if I didn’t run a dump valve. Air goes the wrong way past the spinning fan blades when you lift off the throttle and makes that noise. It got worse when I upped the boost with a remap.

However.....having done some research on it and asked my local Range Rover indy, they tell me it’s the secondary turbo inlet isolation valve and its nothing to worry about. Not sure, but thats what they tell me.

https://www.youtube.com/shorts/3rn-lsmbw8M 2012 4.4 TDV8 Westminster

It hasn’t always done that so something has changed or isn’t operating as it should. While it may not be a problem, surely it’s having an adverse effect.

In my case (and in the very first post by northernmonkeyjones) there is a loss of power as the secondary turbo comes into play. My previous post wasn’t clear, but that’s my biggest frustration which I was wondering if it’s been resolved?

However I’m sure the two are related… Currently driving: 2012 L322 SE Overfinch 4.4 tdv8

Past rides:
2014 Audi Q7 3.0d (good riddance)
2010 L322 Autobiography 5.0 Supercharged
2011 L320 HSE 3.0 sdv6
2014 Jaguar XF-RS 5.0 supercharged
2007 BMW 535D
2005 Mini Cooper S

https://www.fullfatrr.com/forum/topic59478.html