montymole1

Hello all,


I have had my05 sti with dccd 8 day's and have just noticed something that has scared the pants of me....advice from all you scooby owners is needed.

I had drive 35 miles to work and done a total of 580 miles so far, as i pulled on the the rather large work car park I needed to use almost full steering lock.

As i turned at approximate 5 miles an hour the was the loudest clunking noise ever from the fron of the car....almost as if i had torn the front skirt off !

so i got out of the car to check....i could not see anything so a reversed and tried it in the other direction ! the same......

The DCCD was in LOCK so i tried it on auto....still the same...

Please can you guy's advise ???????

And if anyone out there has a new my05 sti please can they try for me, my warranty has not been sorted yet.....so any help will be appreciated......

XRS

My understanding is that you only use lock in very slippery circumstances, not for normal motoring. Also I've heard that it does make loud noises when turning at full lock. Have a search on here, it's been debated recently.

AndyC_772

iTrader: (2)

Perfectly normal DCCD noise. I bet it was really hard to turn the corner too.

You shouldn't be in LOCK unless you're on gravel, snow or some other very loose surface. It prevents there from being any difference in speed between the front and rear wheels - but that's exactly what you need in order to turn a corner. (Think of it this way: imagine doing a U-turn. How far do the front wheels travel? How far do the back wheels travel in the same time?)

The colours of the lights on the dash give you a clue as to the noise you should expect. Green should mean no noise, orange means you may get noise during cornering. Subaru usually assures us that the noise doesn't mean something is being damaged, but it is a clue that you should probably have the DCCD unlocked a bit further.

I use at most the 2nd orange light on a soaking wet motorway. Normally it's left in auto.

GrollySTI

I agree with all the posts above but would add that you can occasionally still hear it in Auto.

There is a particular junction that I sometimes use which is a tight RH 90 degree turn up hill - I've always had the clunking noise when turning there but nowhere else.

montymole1

Thanks Guy's !


I knew I must have been doing something wrong ! can believe how fast you guy's post such good replys....

Scooby net Rock's !

And there was me thinking I would have to book it in at Subaru.....I must be suffering from new car JITTERS.....or somthing like it.


Thanks again !

AndyC_772

iTrader: (2)

Me? Life? Nah.

ThrustSSC

My MY03 STi (no DCCD) does this in reverse on full lock when cold from time to time. I'm told it's just the diff and perfectly normal.

davedipster

On the 03sti it's the tyre skipping over the road on full lock reverse.

Dipster

sparkykev

I've had the occasional noise on lock when backing out of my drive when cold, sounded like the tyre had come off the rim as i came off the dropped kerb.
Its never done it anywhere else.

I'm hoping this is normal on a 01WRX.

mutant_matt

Just leave the diff in full back (open) mode - after all, that's where it's supposed to be!!....

AndyC_772

iTrader: (2)

Don't you think you're missing the point of 'driver controlled' then?

I don't know whether or not you've driven a DCCD-equipped car under a variety of conditions, but it's no gimmick - it makes a big difference to the stability of the car, especially in the wet, doubly so with the dry-biased RE070 tyres.

WRXPete

MY03 WRX, same thing on a cold morning on full lock...it happens

tuscan57

i wish i had driven mine in a variety of conditions...... since getting the spec'c' its been wet, wet and wetter...... hopefully be dry soon so i can see how it really goes........

cannyboy

Basically - have messed around with DCCD in most conditions from ice racing to dry autocross and can tell you the following

DCCD - Lock - Used for very slippery conditions, mud/snow/ice to keep the car most controlable. The downside is that is does cause the impreza to understeer like a pig. Best for use in snow when you don't want the car all over the road, and don't want to drive like a mad man.(Less slip /sliding about). So if it's snowing and you aren't interested in wrestling with the car this is the one... DO NOT USE ON DRY Surfaces

DCCD - AUTO - Actually better on ice snow than Lock, but you will find the car will have a tendency to be less stable - less understeer, but car can break away more quickly when pressing on - best use when ice racing or general day to day use on dry surfaces. Would probably leave in Auto mode for most day to day driving, including wet.

DCCD - 65rear 35 front - Best for dry tarmac. Easier to launch car as rears will break away more quickly. Not a huge difference between this and Auto for general driving.

There are some settings in between, but the main settings are outlined above....

mutant_matt

I would argue, after having done a fair few miles in a DCCD car, that fully back is suitable for virtually all occasions[*]. I'd wind it forward just a tad for the snow though...

Matt

* - does require you to know how to drive though

Paul .G

the benifit of a DCCD can be seen from the different preferances for settings mentioned by all above.
It can be set to how YOU want it . Its the best gizmo I have had on a car ever

How clever is the auto setting ? always thought it had to sence slip to adjust the settings?

I Prefer setting it in manual and let the fun comence

chris's scooby

All the way back in green works for me!

Elmer Fudpucker

I took mine out of auto for the first time today

adjusted it to the green light setting,pulled away carefully while turning to the left and could not believe the almighty clonk that came from the rear

frightened the life out of me!

Does any one know what the torque split increments are from the top arrow,second one down,third to the green light..etc?

apologies in advance for being Orangotang Minus on this subject,Jon

chris's scooby

You shouldn't be getting a clonking sound in green (open)

Oh and i don't think anyone has said yet don't reverse with the diff locked.