R33 Gtr 4 Wheel Drive Not Working

[Let Me Drive]

hay guys my farther has a R33 GTR in which a work shop has told us that the 4 wheel drive system is not working and says it needs a rebuild.

when driving and lunching the gauge on the tork split does not move

can anyone tell us y this would be the case it only has 250awkw and is not drivin hard.

and what do you thikn it would cost to be completed.

[giant]

hi

is there any dash lights coming on.

could be hydraulic pump issue, i would be surprised if the 4wd system needed rebuilding.

you should get a second opinion from a recommended repairer from someone on this forum from victoria,

russ

[ferni]

The gauge should work even if the clutch packs in the attesa were stuffed. The gauge doesn't show how much is going to the front wheels, it shows how muchs the computer wants to feed to the front wheels.... (as far as i know anyway)...

Is the 4wd dash light coming on? Usually thats the first thing to light up when there is a problem (low on fluid etc...)

Does it drive like a rwd? ie with 250rwkw it would break traction pretty easy if it was in rwd, where as in awd 250rwkw would be much harder to break traction...

[gts4diehard]

has the car been run with different size front and rear wheels? this will cook your clutches pretty quick as the front wheel drive isn't designed to be on all the time. if the attessa fluid level is ok and you drive the car sensibly I can't see how you can break it.

If the clutches are gone you will be always in rear wheel drive and I think the same would also happen if the fluid level was low and the system couldn't lock up the clutches so you would be getting a fair bit of wheel spin when you do start accelerating harder if either of these were the case.

It could just be gauge/attessa computer related if you are having no wheel spinning problems. Has anyone played with the attessa unit under the rear parcel shelf?, one is the rear speaker amp, and the other is the attessa computer.

hope this has been of some help.

Stephen

[Let Me Drive]

thanks people for you thoughts

we tryed bleeding the system get the air out but nothing happend.

we checked all the voltages and it seemed all ok.

so its going to another workshop to be looked atit

[AlexCim]

AFAIK the gauge is what the ECU wants to send to the front wheels.

To me it just sounds like the gauge is broken.

Here are a few things to see if the 4wd works

- Try a big hard clutch dumping launch, then check the tyre marks

- Put the car on a hoist and run it, all 4 wheels turn? Then its working somewhat

- Put the car on a 4wd dyno and turn the tractive effort up to see if the fronts stop and rears keep going (aka, transfer case is broken)

They are probably the best methods i can think of

[ali-turko]

my 4wd wasnt working cause i had blown the front diff

but i heard a big crunch when it happend