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Homra

Member Since: 22 Oct 2010
Location: Hillsborough
Posts: 2

2010 Defender 90 Puma 2.4 XS CSW Stornoway Grey

Slight over rev when changing gear & in Low range

Hello All,

I have recently bought a 90 station-wagon puma, past defenders have been 200, 300 series and TD5 so this is my first puma.

I use the landie for towing 80% of the time 3.5/4 ton.

I have noticed when changing gear mostly in lower gears when i clutch and change gear the revs do not drop of but do the opposite a slight jump circa 100 or 200 revs.

When in low range especially when im reversing trailer, when i want to find the biting point of clutch for accurate maneuvering the engine will rev up on her own accord. I assume this is some form of anti stall business!! but it is frustrating when i do not touch the accelerator the vehicle revs and i then need to clutch etc

I hope this makes a bit of sense. I basically want to know is this the way this puma drives or is there a download etc to sort?

I also would like some advise on a good tune for towing.

Many thanks Jeremy

22nd Oct 2010 6:57pm

warren

Member Since: 14 Oct 2009
Location: East Lancs.
Posts: 903

2009 Defender 90 Puma 2.4 HT Santorini Black

In low first the revs rise to about 1000 and stay there, even trying to slow it a bit on the brakes don't work, it just keeps on going. I must admit it does make super-slow manouvering quite hard work.

22nd Oct 2010 10:49pm

AndrewS

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

2013 Defender 130 Puma 2.2 SW Rimini Red

Its called the Idle Jack.

Search +idle +jack

http://www.defender2.net/forum/topic1177.html?highlight=idle+jack

http://www.defender2.net/forum/topic423.html?highlight=idle+jack 130's have feeling's as well you know

23rd Oct 2010 7:24am

jst

Member Since: 14 Jan 2008
Location: Taunton
Posts: 8064

2011 Defender 110 Puma 2.4 USW Stornoway Grey

idle jack, to overcome the low speed in 1st low which LR deemed was too slow. takes it upto 1100rpm. Cheers

James
110 2012 XS Utility
130 2011 M57 bespoke Camper
90 2010 Hardtop
90 M57 1988 Hardtop

25th Oct 2010 1:05pm

gtveloce65

Member Since: 10 Nov 2008
Location: West Sussex
Posts: 107

2008 Defender 110 Puma 2.4 XS CSW Epsom Green

In addition to anti stall and throttle ramp in low-range, mine (2008) had the same issue in high-range. I understand this was achieved using a switch on the clutch to increase revs between gears to reduce transmission shunt - it didn't really work too well and made it sound like I couldn't drive properly

Successive clutch upgrades and maybe newer engine management patches over the last 2 years, and it doesn't do it any more - I wondered what year is your Defender? 1953 80
1965 Alfa Romeo GT Veloce Sprint
1980 Fiat 124 Spider
2008 110xs

2nd Nov 2010 4:30pm

Homra

Member Since: 22 Oct 2010
Location: Hillsborough
Posts: 2

gtveloce65 wrote:
In addition to anti stall and throttle ramp in low-range, mine (2008) had the same issue in high-range. I understand this was achieved using a switch on the clutch to increase revs between gears to reduce transmission shunt - it didn't really work too well and made it sound like I couldn't drive properly

Successive clutch upgrades and maybe newer engine management patches over the last 2 years, and it doesn't do it any more - I wondered what year is your Defender?

mine does the same in high range, like you say as if you don't take your foot off the acelator to change gear, mine is 2010

10th Nov 2010 9:15pm

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