Jackaroo - dodgy motor query + wheel nut query

Submitted: Tuesday, Mar 25, 2008 at 09:22
ThreadID: 55889 Views:2726 Replies:5 FollowUps:6
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Hi folks,
Ive heard that for a couple of years in the late nineties or early naughties Holden used a different engine configuration for the Jackaroo that didn't work so well. Aparently they didn't use the Isuzu motor or did something to it for more efficiency but made it less reliable.

So - can anyone tell me if this info is correct and if so what year(s) the dodgy Jackaroo's were made?

PS - Ive also 'misplaced' (fallen down the cavity inside the jack compartment I think) the wheel nut thingy (technical term) that lets you remove the special locking wheel nut. Any ideas where I can get another (ie are these sold commercially or only available through Holden).

many thanks
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Reply By: Member - Doug T (FNQ) - Tuesday, Mar 25, 2008 at 10:51

Tuesday, Mar 25, 2008 at 10:51
The first Jakaroo's had a 1600cc Motor, ...Gutless wonders, Like the first Subaru Wagons ,
From 1992, the UBS Series was available with a pushrod overhead valve (OHV) 3.1 L intercooled turbodiesel (designated 4JG2) producing 84 Kw (113 hp) at 3600 rpm, and 260 Nm (192 ft·lbf) at 2000 rpm. It was offered as an alternative to the 3.2 L petrol, as a more rugged and fuel-efficient option for towing and heavy-duty operation.This turbodiesel engine has established a reputation for excellent reliability and durability.After 1998, and the introduction of the 4JX1 3.0 L diesel engine, a four-speed automatic transmission was made available in addition to the five speed manual transmission.

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AnswerID: 294570

Reply By: DIO - Tuesday, Mar 25, 2008 at 11:07

Tuesday, Mar 25, 2008 at 11:07
Re the 'wheel nut thingy' etc, try a set of multi grips to remove them. That's what the 'wheel thieves' use with great success. If that doesn't work (I'd be surprised) try a cold chisel or as a last resort angle grinder. p.s. the cold chisel is used to knock the wheel nut off (with hammer of course) - not split it (you could finish up damaging the thread)
AnswerID: 294575

Follow Up By: mythicl - Tuesday, Mar 25, 2008 at 13:00

Tuesday, Mar 25, 2008 at 13:00
Thanks Dio but ive already tried multi grips. They just spin ont he chrome no matter how hard they are clamped. I might grind the nuts back a bit first then give it another go. Ill do the same with all wheels and replace them with normal wheel nuts methinks.

FollowupID: 560478

Reply By: madfisher - Tuesday, Mar 25, 2008 at 12:31

Tuesday, Mar 25, 2008 at 12:31
It was the 3lt dohc diesel from 98 that gave some grief if not serviced properly, but pretty well sorted by now.
The 3.5dohc petrol is a superb motor, reliable, long lasting and smoooth for a v6, especially compared to the 4lt Toyota v6.
I have heard of 3.2s doing in excess of 400000ks which is good for a petrol motor.
My 3.5 jack is also more economical than wifes 3lt Paj
Cheers Pete
AnswerID: 294586

Follow Up By: mythicl - Tuesday, Mar 25, 2008 at 13:05

Tuesday, Mar 25, 2008 at 13:05
Thanks Madfisher. Mines a 2001 3lt T/D diesal and we have had a few problems but mostly of those can be attributed to the Holden Dealership in Adelaide (who shall remain nameless) who have no idea what 'customer service' or actually looking after your vehicle means.

I have heard that it was the 2001 model that had the problems - hence my posting.

On another note - we nearly brought a 3.5lt Petrol Jackaroo but got put off by the Fuel Consumption which according to the previous owner was around 6.5km/l versus 8.3km/l for the 3lt. Ive regretted this a little since then as the 4 cylinder doesn't quite have the grunt when going seriously off road but generally it's pretty good.

What sort of comsumption are you getting from your V6??

FollowupID: 560481

Follow Up By: madfisher - Tuesday, Mar 25, 2008 at 22:27

Tuesday, Mar 25, 2008 at 22:27
Mate I am surprised how good my manual Jack is. On a recent trip to melbourne packed to the roof I covered 550ks for 65l which by my reckoning is 8.46km/l or 25mpg. This was using cruise to sit on 1o5 on the hume with 40psi in the tyres. I have also had the restrictors removed. Arround town it dropsto arround 16 to 20 mpg.
Not bad for a 2 ton 4wd , my old 3.3 torana used more fuel than that and it only weighed 1170kg.
You will have better low down torque than the petrol, and it is easy to provoke wheel spin with the v6
I also run premium fuel which normaly gives me anextra 50ks per tank.
They are a very underated vehicle, and this comes from a family that runs a Paj and a Jack.
Cheers Pete
FollowupID: 560648

Follow Up By: mythicl - Wednesday, Mar 26, 2008 at 23:06

Wednesday, Mar 26, 2008 at 23:06
Thats pretty impressive. We were looking at a 3.5 V6 auto jackaroo and the fuel consumption according to the previous owner was about 6.5km/l. Obviously the automatic is a lot thirstier.

Thanks for the info.

FollowupID: 560847

Follow Up By: madfisher - Thursday, Mar 27, 2008 at 21:06

Thursday, Mar 27, 2008 at 21:06
Yes Ross the diff seems to be between 100 and 50ks per tank, which is why I wanted a manual. Towing by 4.2 m boat loaded to the gunwales with camping gear between Bathurst and Gundagai trying to keep to 95 I achieved 7.17km/l recently. That was fairly flat going though. Mild ats all so help.
Cheers Pete
FollowupID: 561048

Reply By: Member - Phil G (SA) - Tuesday, Mar 25, 2008 at 20:40

Tuesday, Mar 25, 2008 at 20:40
With the wheel nuts, jack up the wheel, remove the other 5 nuts, then keep rocking the wheel to and fro until the lock nut gets loosened. Then put a normal wheel nut back on.
AnswerID: 294720

Reply By: Member - David P (VIC) - Tuesday, Mar 25, 2008 at 21:37

Tuesday, Mar 25, 2008 at 21:37
not sure if I am on the right track, but if you want to recover something from a gap, a flexible wand with a magnetic tip that can be bought at any good auto parts shop might be what you need/want. Very hand to have anyway....silverback
AnswerID: 294727

Follow Up By: mythicl - Wednesday, Mar 26, 2008 at 23:04

Wednesday, Mar 26, 2008 at 23:04
Thanks David but I don't know where the thing has gone so one of those wands won't be much good. have to get another one I think. They also aren't much good on chrome.

FollowupID: 560846

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