Benjerbustmills wrote:

<SNIP>At first, it goes then, it’s like all brakes go on, and i depress the accelerator much more, and probably two seconds later, we’re off at a million miles an hour. <SNIP>

Some excellent suggestions…. All very much appreciated.
I’ve been out and driven it around in “Sport”
Mode, and it does seem much less hesitant. Yes it’s basically only done 100 miles a week, and now it’s got me behind the wheel.
When I first had it, I pretty much had “DPF” full warning.
Dealer told me to drive it hard, so I ranted it around in command shift for an hour or so, which cleared it, and dealers did a forced regen.
I’ll start my cleaning the MAP sensor, and see what happens then.
Really happy with the car….
I prefer it to my 405, so that will have to go!
Wife not impressed with, 2 RR, and 2 Hippos!

2012 4.4 HSE
2016 SDV6 Autobiography
2004 2.5 V6 Sport Hippo
2002 TD4 3 dr Kalahari

Driving it hard doesn't clear the DPF - you need long steady M-way trips to do this. If it's been short --tripped all it's life it would benefit from some dismantling of the intake components to manualy remove the soot/oil 'tar' buildup esp in the intake 'donout' where the MAP sensor plugs into, the throttle plate and the EGR connector pipe. Nasty messy job but there is lots of info on here how it's done 2012 TDV8 Vogue (L322)

The hesitation is a common'ish issue but tends to vary from mild to severe, one way to sort it is with a remap, 95% of it can be mapped out...  Pete
__________________________________________________
2014 L405 Autobiography SDV8 4.4 Loire Blue Ebony interior
2011 L322 Vogue SE 4.4 TDV8 Baltic Blue. Parchment over Navy Interior. Sold
2012 L322 Autobiography 5.0 Supercharged Ipanema Sand, Jet Interior. Sold
2002 L322 Vogue 4.4 V8 Epson Green, Ivory over Aspen Interior (Fatty Offroader) Sold
-Click for Project Fatty off roader-

I've had mine remapped (Quantum Tuning). Under load, it definitely feels more responsible with the obvious boost of torque and power. But it didn't fix the hesitation issues from a standstill.
If I'm pulling out of a junction/roundabout from a standstill, I'll brake boost and there are no issues (I left foot brake). However, if rolling up to a junction (left foot on brake without coming to a stop), then accelerate out into a gap straight away, I experience what you describe as 'suicide' hesitation - it cuts the power, takes a second or so then kicks back in full force. Not fun when you're staring at somebody on your right hand side
I figured it was something to do with holding the brake while accelerating?
Not sure if we are both experiencing the same issue, but try driving down the road and left foot brake while holding the throttle with your right foot and you'll see what I mean - it cuts the power. I thought it may be a safety feature in case someone passes out at the wheel?
I'd love to get it mapped out, along with a gearbox map. But I can't find anyone who does it for a ZF8 on the L322....

There’s an easy cure for this-get a drive in a 70s auto. I once had a Viva with a 3 speed lurch-o- matic box, incredibly despite only having 3 gears the engineers managed to ensure that at least 95% of the time it was in the wrong gear.
That memory makes me realise how spoilt we are with today’s ZF offerings. I find it very difficult to criticise any modern auto.

hotpotatojr wrote:

I've had mine remapped (Quantum Tuning). Under load, it definitely feels more responsible with the obvious boost of torque and power. But it didn't fix the hesitation issues from a standstill.
If I'm pulling out of a junction/roundabout from a standstill, I'll brake boost and there are no issues (I left foot brake). However, if rolling up to a junction (left foot on brake without coming to a stop), then accelerate out into a gap straight away, I experience what you describe as 'suicide' hesitation - it cuts the power, takes a second or so then kicks back in full force. Not fun when you're staring at somebody on your right hand side
I figured it was something to do with holding the brake while accelerating?
Not sure if we are both experiencing the same issue, but try driving down the road and left foot brake while holding the throttle with your right foot and you'll see what I mean - it cuts the power. I thought it may be a safety feature in case someone passes out at the wheel?
I'd love to get it mapped out, along with a gearbox map. But I can't find anyone who does it for a ZF8 on the L322....

Prior to having EGR mapped-out, whenever hesitation became an issue I always cleaned the MAP sensor to get back to normal responsiveness. Since the remap the MAP sensor has always been clean.

It's certainly a pain for me and has been one big consideration in whether I keep the car as it's just not as responsive as I'd like. Never driven an L405 SDV8, wonder if they do the same? I'm convinced it's something that can be mapped out, but unfortunately not by the quantum tuning map I've had.
Since having the EGR mapped out, my MAP sensor hasn't been caked in crap like it used to be when I checked. I've also blanked it off with some stainless plate for good measure.
I'll start another thread on ZF8 remap for these cars as I can't seem to find anything not BMW related.

The EGR shuts as soon as anything other than the most gentle power is requested from the acelerator input. The engine control systems are much more advanced on the 4.4 vs the 3.6 and it can measure EGR content in the intake charge so not as easy to fool as the 3.6 with regards to EGR blanking and no evidence it's anything to do with more EGR flow rate on the 4.4. The 4.4 also uses the throttle plate to create intake partial vacuum to control EGR flow so if the EGR sysyem is tar'ed up after a lifetime of 100mile a week short trips it could be contributing to the issue. I dispute the notion that 'they all do it' as some kind of built in fault. 2012 TDV8 Vogue (L322)

Don't disagree - I don't think its EGR related as (at least in my car) the hesitation is exactly the same now (EGR coded out and blanked off) than it was before.
I haven't driven any other 4.4 TDV8 than my own. My issue with the way it drives is specifically pressing the brake pedal while accelerating causes the revs to drop to idle and stop moving forwards. Does anyone else experience the same? Only other car I've experienced this in is a family member's manual '02 SDI VW Polo. Having left foot braked all my life, I noticed it instantly.

It's very likley a saftey feature and I can see very good reasons to have it. Not many people left brake afterall. 2012 TDV8 Vogue (L322)

Does using the flappy paddles help? 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
--------------------------------------------------

I’ve driven an SDV8 and to be fair I didn’t notice anything, but my friend assures me, that they behave in exactly the same way.
Left foot braking is just a driving style, that enables you to be “on it” all the time.
Like I’ve said…. When I first got the dreaded “DPF Full” warning, I caned it round the lanes, until it was “pinging” hot. Not once did it misbehave, being driven hard.
The issue, is when you merely want to go from a standing start, to pulling over to the right or left into traffic.
Then…. It could kill you!
Personally, I just think that the ECU, cannot cope with checking everything, from frikkin tyre pressures to engine faults, & it goes into meltdown.
If I knew someone would could do it, I’d have the EGR’s blanked, the guts of the DPF’s ripped out, & the whole thing remapped.
My 2012 322 has a better carbon footprint than any milk float out there!

Ensure that the pcm software is at the latest level. My April 12 build didn't have the latest version that was already released.