Isuzu Trooper Owners Club UK™

doug bain · * Joined: 05 Feb 2007 Posts: 16 Location: Northampton

Hi,
Not long had my 3.0 citation V reg, and can't get it to go into 4 x 4 - local garage checked the vacum pipes and connections and said all appeared ok, but light keeps flashing. not sure what to try next, anyone else had this prob?

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TimBanham · Posted: Mon Feb 05, 2007 15:08 Post subject:

Try it when stationary first.

Then try it driving slowly with front wheels in a straight line.

Mine sometimes seems to take a while to disengage when I have used it.

(Oh and I'm assuming you are not doing this on dry tarmac otherwise you can knacker it up!)
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3.0TD LWB Citation

doug bain · * Joined: 05 Feb 2007 Posts: 16 Location: Northampton

Hi,
Thanks for the reply-not sure when you buy 2nd hand what has been done to the vehicle previous? by knackered is that a replaceable part or the whole drive gone?
I can change between high and low ratio ok..
but in the last bit of snow I pressed the button but the rear wheels were the only drive.

MartQ · Posted: Mon Feb 05, 2007 15:23 Post subject:

Just a thought,

Have you got manual or auto locking front hubs?
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94 Big Horn 3.1 Lotus Auto
Torque Flung Dirt Technique!

doug bain · * Joined: 05 Feb 2007 Posts: 16 Location: Northampton

It's auto front hubs - man. gear box. I tried most suggestions in the book slow forward and swithching the 4x4 on and off.

TimBanham · Posted: Mon Feb 05, 2007 15:32 Post subject:

Should be auto hubs being as it's mk4.
(but I'm guessing as never thought about it on mine Smile

)
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3.0TD LWB Citation

MartQ · Posted: Mon Feb 05, 2007 15:42 Post subject:

Perhaps auto hubs could do with a stripdown & clean.

There's a post about it somewhere on here recently.
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94 Big Horn 3.1 Lotus Auto
Torque Flung Dirt Technique!

doug bain · * Joined: 05 Feb 2007 Posts: 16 Location: Northampton

thanks I'll go down that route - any idea if it's an expensive job or dealer only ??

MartQ · Posted: Mon Feb 05, 2007 15:49 Post subject:

Looks like a fairly simple DIY job, so any garage should be able to do it.

Aparantly you don't even need to remove the wheels.
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94 Big Horn 3.1 Lotus Auto
Torque Flung Dirt Technique!

markymoan · Posted: Mon Feb 05, 2007 16:42 Post subject:

The mk4 with shift on the fly doesnt have locking hubs, it has vaccum pipes that engage/ disengage 1 driveshaft.
These pipes are prone to popping off Wink

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markymoan · Posted: Mon Feb 05, 2007 16:46 Post subject:

you could engage 4wd and jack the front up, then spin the wheels by hand to see if the servo has locked the driveshaft.
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doug bain · * Joined: 05 Feb 2007 Posts: 16 Location: Northampton

Thanks to all who replied-I'll try the tests and post how I get on.

greasemonkey · Posted: Mon Feb 05, 2007 20:20 Post subject:

Hi
on these it's not just a vacumn pipe fault
but also if not used for ages the servo's and vacumn cylinders
get very sticky
try changing into 4 wd when the engine and gearbox are red hot say
afte a good run

it could also be the wiring
this is a common fault
trace the wiring and look for breaks
does the 4wd light flash when starting and then go out
or does it stay on?
cheers
GM
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Isuzu Vehicross 3.2 V6 The Silver Bullet

markymoan · Posted: Mon Feb 05, 2007 20:30 Post subject:

According to the OP it keeps flashing Question

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greasemonkey · Posted: Mon Feb 05, 2007 22:23 Post subject:

Hi
ok if it stays flashing then its 99% a wiring fault
not vacumn pipes
cheers
GM
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Isuzu Vehicross 3.2 V6 The Silver Bullet