Holden Jackaroo

Is it the 3.0l tdi 4JX1 engine???

may be arb could help. i think it is called a manual idle adjuster, maybe youd have better luck calling it that.

You can always rest your foot against the sidewall, that usually helps to not stab the accelerator on rough stuff.

My 2002 3.0 litre turbo diesel (bought it at government auctions 2 years ago) is a manual. I also had a jerky throttle problem when i first got it and assumed it was just how they went as i didn't know any diferent. Is yours auto or manual? I was told by one auto owner that he ditched his manual for the auto specifically because he got so bleep off with the jerky throttle and the auto 'smothed it out'. Anyway, turns out Jackaroos of this type have been having injector problems all over australia. I had the 'o' rings renewed under warrantee 3 times and it was still jerky. It also used to smoke a lot which was another 'o' ring tel-tale problem. Anyway, Holden eventually came up with a new injector test apparatus and on testing my car with it, honourably honoured the warrantee and replaced the entire set of injectors. (Thanks Holden, it goes OK now). Well it also cured the jerky throttle and made it really nice to drive. Assuming yours (low k's) is still under warantee, better start pestering your favourite holden dealer! Oh yeah, they are an amazing 4wd, great value for money given the technology you get and the off road capability is very good. Have fun! p.s. re the "throttle up", I haven't got one either but I understand that when you put the transfer case into low-range, the 'fly-by-wire' throttle effectively gets re-callibrated and becomes less less sensitive making it better for rough terrain. I could be wrong but mine seems to do this.
Regards.........
Spudley.

I have never heard of this being called a throttle up...........I had no idea what you were on about for a while there.

I think you mean a hand throttle.........another way is to simply get used to driving your vehicle..........just a matter of experience........although sounds like u may have a case if there are issues as suggested above by various people.