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Smurph

Member Since: 29 May 2013
Location: Zimbabwe
Posts: 27

2012 Defender 110 Puma 2.2 SW Keswick Green

Idle Jack

Can anyone tell me how to disable the idle jack? vehicle is 2012, 110.

19th May 2014 1:45pm

110 John

Member Since: 11 Jan 2014
Location: Northumberland
Posts: 158

2009 Defender 110 Puma 2.4 XS CSW Orkney Grey

Dont think it is possible to do that

19th May 2014 2:12pm

blackwolf

Member Since: 03 Nov 2009
Location: South West England
Posts: 17372

2007 Defender 110 Puma 2.4 DCPU Stornoway Grey

As a matter of interest, why would you want to?

19th May 2014 2:29pm

Smurph

Member Since: 29 May 2013
Location: Zimbabwe
Posts: 27

I rather control the revs myself

20th May 2014 8:42am

Smurph

Member Since: 29 May 2013
Location: Zimbabwe
Posts: 27

Can be done. Simply disconnect plug on top of transfer box.... much better

17th Jun 2014 9:12am

Phil_D

Member Since: 09 May 2014
Location: Perthshire
Posts: 25

Smurph, which plug did you disconnect?

Phil.

17th Jun 2014 1:07pm

Smurph

Member Since: 29 May 2013
Location: Zimbabwe
Posts: 27

Grey plug with a connection to the the area around the centre diff. There is another more important looking connection to the main gearbox. As far as I can tell there is no difference in the vehicles behavior except that the idle speed doesn't change automatically when in low range.

18th Jun 2014 7:49am

Phil_D

Member Since: 09 May 2014
Location: Perthshire
Posts: 25

Thanks, I'll experiment with that!

Phil.

18th Jun 2014 7:50am

roel

Member Since: 08 Aug 2009
Location: Lelystad
Posts: 2039

I don't understand why you want to do it as I think it's the only improvement from an td5.

But yes by disconnecting the plug the ecu doesn't know you are in low gear so will not use the anti stall mode.

You can't do this anymore then:

https://www.youtube.com/watch?v=0jhuKLrjJLg&feature=related
just after 1 minute Roel

1984 90 2.5 na Diesel - RR V8 (1994-2001)
1997 Camel Trophy Discovery 300TDI (2001-2009)
2005 G4 Discovery III 4.4 V8 (2008-2018) It's gone but it still hurts.
2003 90 Td5 (2009-now)

18th Jun 2014 9:25am

blackwolf

Member Since: 03 Nov 2009
Location: South West England
Posts: 17372

It won't affect the anti-stall at all, just the idle jack, which is a totally different and independent thing.

Idle jack is a safety feature to prevent you coming a cropper on very steep descents, where the very low 1st or reverse gear will cause loss of traction. I have to admit I still don't understand why anyone would want to disable it, but the method described above will do just that.

18th Jun 2014 5:54pm

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