Only 2wd

[TheRealStig]

I discovered today, that I only got 2wd.
It might have something to do with brake testing, as the spcecialist did not install the locking fuse prior to testing.

What is broke?

[TheRealStig]

I forgot to mention, I only got RWD.

[B 4 You]

Originally Posted by TheRealStig

I forgot to mention, I only got RWD.

You have been blessed, my friend.

[oab_au]

Originally Posted by TheRealStig

I discovered today, that I only got 2wd.
It might have something to do with brake testing, as the spcecialist did not install the locking fuse prior to testing.

What is broke?

Originally Posted by TheRealStig

I forgot to mention, I only got RWD.

I guess you have a VTD box?
When you say "brake testing" what did they do?
Do you mean, that now it will spin the back wheels?
Does it make any noises?

Harvey.

[TheRealStig]

The brakes were tested 2 by 2 - front and rear. At a time it said "Klonk, Klonk, Klonk".
Activating the Diff. Lock, does not change anything. No warning lights.

Nothing indicates any faults except of no traction from front wheels.

Can it be the solenoid valve?

It is an euro version.

[jetboy]

Danishstig: Find the transmission code. Read it backwards. The first letter you encounter that is a Z or a Y will tell you if you have VTD which i'm very sure you have. Y is VTD, Z is ACT4/MPT.

This happened to my VTD car too, prior to my ownership.

You should contact Voldsund Motor in Ålesund/Nor and ask how they fixed it. They spent a lot of time researching the problem, ending up with a retired Subaru master tech from Switzerland advising them. It's exactly one year ago. If they can't find any shop logs on what they did, at least they will remember the debacle and put you into contact with the Swiss mechanic.

I think the major thing done to my car was replacing a solenoid c and a plate set.

Harvery, while we're on the subject.... did you or anyone else by any chance study the plantery arrangement used in SVX-generation VTD?

B 4 U, he's blessed with 64% of whatever power his car got.... And with VTD, you are blessed anyway. The only major differences between RWD and VTD-AWD is better grip and greater tendency to understeer. The latter can be corrected with steering and agile footing and appropriate tires.

http://www.voldsundmotor.no/

You can find my VIN for reference in the registration thread.

[oab_au]

Originally Posted by TheRealStig

The brakes were tested 2 by 2 - front and rear. At a time it said "Klonk, Klonk, Klonk".
Activating the Diff. Lock, does not change anything. No warning lights.

Nothing indicates any faults except of no traction from front wheels.

Can it be the solenoid valve?

It is an euro version.

OK I am guessing that when the front wheels were checked the rears were stopped, and the opposite when the rears were checked.
As you still have drive to the rears, the front drive gear is OK, or there would be no rear drive.
If this is the way it was done, I would think that the Limited Slip clutch has been destroyed. While the testing was happening the clutch was applying to try to drive the opposite end, but just slipped.
You can confirm this by setting the front wheels on a slippery surface, apply the hand brake, see if the front wheels will try to spin. This will confirm if the front drive line is ok or not.

Jetboy
Harvery, while we're on the subject.... did you or anyone else by any chance study the plantery arrangement used in SVX-generation VTD?

Yes, what do you want to know about it?
Harvey.

[jetboy]

Originally Posted by oab_au

Yes, what do you want to know about it?
Harvey.

How is it set up and how does it function?

[oab_au]

Originally Posted by jetboy

How is it set up and how does it function?

I have written a fair bit on the VTD, if you search VTD under Oab_au you can find it. Here is the orignal post that I did in 2002.
http://www.subaru-svx.net/forum/showthread.php?t=4496

and these are some drawings that shows the 4act gear set.
http://www.subaru-svx.net/photos/files/oab_au/24053.bmp

and the VTDgear set.
http://www.subaru-svx.net/photos/files/oab_au/24054.bmp

Harvey.

[TheRealStig]

Tx for the drawings.
To me: There should be constant FWD and additional RWD by activating the clutch.
In my case, it is not the clutch function, which is malfunctioning. It could be a broken set of gears supplying the front wheels.
????

[oab_au]

Originally Posted by TheRealStig

Tx for the drawings.
To me: There should be constant FWD and additional RWD by activating the clutch.
In my case, it is not the clutch function, which is malfunctioning. It could be a broken set of gears supplying the front wheels.
????

No mate the 4act has constant FWD, with the clutch engaging to drive the rear wheels.

In the VTD the clutch doesn't contribute to drive drive at all.

The wheels are both driven by gears, that can drive either, or both, ends. It is like a normal differential with different size sun/planet gears on each side, so that one wheel has more torque than the other, with a limited slip clutch across them, to prevent the most torque wheel from spinning.

This how I believe yours is except that your limited slip clutch is not working, so the rear with the most torque spins.

I have driven my car without the clutch working, there is no different, unless you accelerate on a slippery surface, then the rear wheels spin.

Without knowing what was happening during the testing; if the epicyclic gears were run hard, they may be damaged. This happens if the car is towed with one set of wheels on the road turning, it only takes 10k to destroy the epicyclic gears.

The rear of the box with the AWD unit in it, can be removed with out pulling the box out.

Harvey.

[jetboy]

But did we establish specifically which drive DanishStig has? You say "Euro model", so you know the car was not purchased originally in DK?

[TheRealStig]

I know only of 6 SVXes in DK - all imported as used due to the high taxes. Mine had it's first 18 years in Germany.