Thread: Idle-Jack Dangerous in low range reverse Puma

Originally Posted by FV1601

I assume that my 2010 2.4 shares some of these features, certainly in reverse low range. I also had the backing the trailer (empty) down a steep gravel and wet leaf hill experience when the Landy accelerated, almost Jack knifed before I could stop. Scared the Bejesus out of me.
Rich.

Cheers Rich. Sounds very similar. It's definitely a problem in certain circumstances.

Originally Posted by MrLandy

Cheers Rich. Sounds very similar. It's definitely a problem in certain circumstances.

On the other hand, if you are reversing up hill on gravel or dirt with large rocks and ruts it is a definite bonus. Now that you're aware of this feature it probably won't effect you adversely again, because as soon as you reach the point where you know it kicks in you will automatically depress the clutch. You won't even have to think about it.

Cheers, Billy.

Originally Posted by cuppabillytea

On the other hand, if you are reversing up hill on gravel or dirt with large rocks and ruts it is a definite bonus. Now that you're aware of this feature it probably won't effect you adversely again, because as soon as you reach the point where you know it kicks in you will automatically depress the clutch. You won't even have to think about it.

Cheers, Billy.

Yes like anything you get used to it (or you just don't use it!). But it's good for others to know in advance...

Cheers CBT

Originally Posted by MrLandy

Yes like anything you get used to it (or you just don't use it!). But it's good for others to know in advance...

Cheers CBT

Yes indeed. You do them a big favour.

Revisiting an old thread I know, but has anyone actually found reference to the idle jack in the drivers handbook or associated material?
Or are we all supposed to learn the hard way? ( and then search AULRO...)


On the plus side, after my scary introduction (reversing empty trailer down steep gravel/wet leaves scenario) I have been experimenting with it of late after fitting the lockers, and the combination is quite impressive.
Rich.

Originally Posted by FV1601

Revisiting an old thread I know, but has anyone actually found reference to the idle jack in the drivers handbook or associated material?
Or are we all supposed to learn the hard way? ( and then search AULRO...)


On the plus side, after my scary introduction (reversing empty trailer down steep gravel/wet leaves scenario) I have been experimenting with it of late after fitting the lockers, and the combination is quite impressive.
Rich.

the feature is a very useful tool offroad... the car will climb by itself with only steering input needed! I love it... makes me look like a genius and makes my 90 look like a weapon hahahaha

Originally Posted by FV1601

Revisiting an old thread I know, but has anyone actually found reference to the idle jack in the drivers handbook or associated material?
Or are we all supposed to learn the hard way? ( and then search AULRO...)


On the plus side, after my scary introduction (reversing empty trailer down steep gravel/wet leaves scenario) I have been experimenting with it of late after fitting the lockers, and the combination is quite impressive.
Rich.

Am still stunned you and others have had an issue with this. In my vehicle, after selecting low range, selecting reverse/first, letting out the clutch normally, the transition from around 800rpm (normal idle) to 1100 rpm (jacked up idle) is barely perceptible, gradual, controlled and smooth. Even when at 1100 rpm even the slowest garden snails leave me in their dust.

I should video it and share it....

If yours lurches off dangerously there has to be a fault somewhere and needs a warranty fix!

Originally Posted by debruiser

the feature is a very useful tool offroad... the car will climb by itself with only steering input needed! I love it... makes me look like a genius and makes my 90 look like a weapon hahahaha

Thats anti-stall.

Idle Jack kicks in only in low first or low reverse after the clutch pedal is fully raised. You should then notice your idle speed goes up a few hundred rpm. (Normal is around 800rpm. It goes up to about 1100rpm in the above circumstances).

If you so much as touch the clutch pedal the idle speed will drop again to 800 in a few seconds.

The reason given for raising the idle speed when motoring along in low first and low reverse is that those gear ratios result in too slow a rate of turn at the wheels for safe descents on slippery hills