could it be

quick question

having problems with my car when it changes up and down it jolts quite bad !!!
its the auto box in the v6

ive read and am undering checking fluid and solenoids on it

BUT could a ####ed VCU also course this to happen ?(as on full lock the car slows down very fast like brakes on)

cheers
griff

It's possible the VCU could be contributing to the problem, but i personally doubt it. If the car has a big problem on a full lock, then the VCU may indeed be tired, but it wouldn't mess up the gear changes that much am sure. If anything, there may even be an additional dampening effect.

I think the problem lies elsewhere, and am sorry i don't know enough about that box to help further.

What i will say though, is that your doing a grand job wading through all this and getting it going.

could be the seals within the gear box what is it like when it is cold if it change's slow and takes some time it will be the seals hope this helps

griff2 said:

quick question

having problems with my car when it changes up and down it jolts quite bad !!!
its the auto box in the v6

ive read and am undering checking fluid and solenoids on it

BUT could a ####ed VCU also course this to happen ?(as on full lock the car slows down very fast like brakes on)

cheers
griff

Click to expand...

Start at the beginning...

Resistance check.
Level check or replace oil and level check.
Test drive.

When you say jolts is it just a more noticeable gear change than normal, or is it the feeling of another car driving into yours when stationary, at 3mph?

Get someone to look at the engine movement when you put it into P, N, R etc and see if the engine rocks. Can't see it being the vcu causing the jolt on gear change.

Mite help i just purchased on line a full manual covering 97-2006 incl the V6
and the jaco boxes covers everything only $9.00US sent as a PDF you can print from ext, Supplied same day from [email protected] it has made working on mine so easy if you cant i could loan you mine but you would have to send it back

Is that the Rave manual? If so is free from many places including here.
Link to RAVE ISO Images - Land Rover Forums - Land Rover Enthusiast Forum

Have not been able to down load from that link but this one is 1850 pages with full explanations how to do each job covers all models and gearboxes

Had this problem on our Freelander 1 Auto, drove us mad trying to find the problem until some smart dick suggested putting it back on the ramp but in neutral not park. After berating him did exactly that and voila, fault staring me in the face, rear diff mounting shot, £107 for replacements from Land Rover and she runs sweet now.

Apparently if the box was in park the diff and prop was locked solid therefor no movement in it, in neutral its free to move.

i will try that thanks ,it worth looking at ,i no the dif mount went on my other freelander last year if i remember it sounded dif but you never no :0)

Hippo said:

Start at the beginning...

Resistance check.
Level check or replace oil and level check.
Test drive.

When you say jolts is it just a more noticeable gear change than normal, or is it the feeling of another car driving into yours when stationary, at 3mph?

Get someone to look at the engine movement when you put it into P, N, R etc and see if the engine rocks. Can't see it being the vcu causing the jolt on gear change.

Click to expand...

bit of both to be honest, gear change up much more noticeable than would expect but gear down def feels like a car hit at 3mph

griff2 said:

bit of both to be honest, gear change up much more noticeable than would expect but gear down def feels like a car hit at 3mph

Click to expand...

That doesn't sound good. If you do take it apart do one job at a time. Like change solenoids then see how it drives. If still bad then it's something else inside the main section. The worse thing you can do is strip the lot and put it back to find it's worse or another fault has cropped up, and you don't know where to start. solenoids or main section gearing/clutches.

Rave disk is over ere:

http://www.landyzone.co.uk/lz/f69/rave-disk-maintenance-manual-260227.html

Personally, I'd do a couple of fluid changes before condemning the gearbox components. The new fluid has a powerful cleaning action. You'd be surprised just how well a dirty box will improve with nice clean fluid and a few miles for it to do its magic.
Oh and check the bottom tie bar large bush as they go soft.

I'd go with nodge. Just done a service on a Mercedes gearbox cos it was banging when changing gear, loosing drive occasionally, generally not confidence inspiring to drive. Fluid was filthy. New fluid and filter and it's like a different car. I know it's not a Land Rover but the operation is the same.

Fluid change is cheaper and easier to do anorl.