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alantd

Member Since: 14 Dec 2008
Location: Northamptonshire
Posts: 1513

2007 Defender 110 Puma 2.4 XS CSW Tonga Green

Puma anti-stall

Definitely a real-world scenario this - towing a 12T truck with no driver.

http://www.youtube.com/watch?v=0jhuKLrjJLg&feature=related

Quite fun though. One that started out as a 2.4 TDCi 110 XS
+ New Defender 110 First Edition

10th Apr 2009 10:17pm

fekete

Member Since: 24 Dec 2008
Location: Here on the other end of the computer
Posts: 3626

2007 Defender 90 Puma 2.4 HT Bonatti Grey

That is quite amazing

NEVER TAKE LIFE SERIOUSLY. NOBODY GETS OUT ALIVE ANYWAY

11th Apr 2009 9:16am

philp

Member Since: 21 Oct 2008
Location: surrey
Posts: 22

2008 Defender 90 Puma 2.4 HT Tonga Green

I often wonder after being impressed with the Anti-stall on my TDci if it would be an easy thing to re-programme the engine management strategy on the TD5 to give the existing rather poor Anti-stall a bit of a boost?

I assume the ECM does this by adjusting the Fuel delivery/Injection control to compensate for the sudden load,
so you would have to re-write that part of the strategy to really up the Oomph... we know in tuned form the TD5 is quite capable of impressive torque figures.
Any thoughts anyone?

11th Apr 2009 3:05pm

kljw

Member Since: 23 Jan 2009
Location: Edinburgh
Posts: 265

2009 Defender 90 Puma 2.4 SVX Soft Top Auto Santorini Black

that was an amazing peace of video. am i correct in thinking that the antistall is also know as idle jack? Cheers
keith
puer claudius

21st Apr 2009 7:52am

AndrewS

Member Since: 10 Apr 2007
Location: Hereford
Posts: 3708

2013 Defender 130 Puma 2.2 SW Rimini Red

kljw wrote:
that was an amazing peace of video. am i correct in thinking that the antistall is also know as idle jack?

No, two different systems. the idle jack is there to help, stop or reduce the engine braking in low range. The Puma has lots of Torque (too much) when you need to use engine braking to descend, the standard engine would hold the wheel rotation back and the vehicle would slide. The simple fix was to increase the revs when the clutch is lifted in 1st low, This now allows the wheels to turn at the same rate as the vehicle descends. Not an exact science but LR decided that an idle jack is better than no idle jack. This is what happens when an engine from a parts bin is adapted for use in a vehicle that it was not designed to be installed in. Thanks Ford

21st Apr 2009 9:11pm

mse

Member Since: 06 Apr 2008
Location: UK
Posts: 5038

2016 Defender 110 Puma 2.2 XS CSW Scotia Grey

AndrewS wrote:
kljw wrote:
that was an amazing peace of video. am i correct in thinking that the antistall is also know as idle jack?

No, two different systems. the idle jack is there to help, stop or reduce the engine braking in low range. The Puma has lots of Torque (too much) when you need to use engine braking to descend, the standard engine would hold the wheel rotation back and the vehicle would slide. The simple fix was to increase the revs when the clutch is lifted in 1st low, This now allows the wheels to turn at the same rate as the vehicle descends. Not an exact science but LR decided that an idle jack is better than no idle jack. This is what happens when an engine from a parts bin is adapted for use in a vehicle that it was not designed to be installed in. Thanks Ford

Not really - more like when the design and redesign is cost limited or time limited...its not beyond the capability to change that problem...the cost will have stopped it. Mike

22nd Apr 2009 3:37pm

AndrewS

Member Since: 10 Apr 2007
Location: Hereford
Posts: 3708

mse wrote:
Not really - more like when the design and redesign is cost limited or time limited...

Ahh

well you clearly know the proper answer

From your answer I expect you know more than you are letting on

PS

Will the new one work 'Please say yes'

23rd Apr 2009 8:03pm

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