Hicas?

[_x_FiReStOrM_x_]

Hi guys! Hope i've posted this in the right area.

I've owned an r32 gtst for 2 weeks now, and today i noticed that my Hicas ECU is missing...

Looking under the parcel shelf, theres 3 unconnected harnesses. I definately have the Hicas steering rack fitted. It has the hydraulic lines fitted to it and looks fine and unmodified externally.

My steering does not feel abnormally heavy at all, as others have described.. nor does the Hicas light on the dash illuminate.

My question is, should it still work? Or is it even working at all (how can i tell)?

Thank in advance!

Phil.

[salad]

If the HICAS computer is gone, it will not work as the computer controls what it does and when.

The light isn't on because the computer sends the warning signal to the light.

With my car the steering did go heavy after the computer was removed though...

I dont think it's good to just leave the rack like that with no computer, I think there is a small amount of movement still in the rack.

[_x_FiReStOrM_x_]

Thanks for the speedy reply Salad.

Is there any way to test for rack movement at all? Would i just turn the wheels to lock and watch the rear wheels for movement?

Should i try and source another computer and see what happens? Does anybody know what a second hand one is worth?

Edited June 13, 2007 by _x_FiReStOrM_x_

[Rekin]

hicas only moves rear wheels 1-2degress at speeds above 60km/h (or 80km/h)

You'll have to put the back wheels off the ground, accell to 70km/h and turn wheel to see if they tilt haha

[_x_FiReStOrM_x_]

Oh ok... sounds safe. LOL

So is hicas really feelable? like if i was to dart from right to left quickly at speed, would i feel anything in the rear?

[Rekin]

yep you can feel hicas, and its why majority of people remove it.

It sorta feels like the rear of the car is stepping out but it isnt haha

Plenty of threads about hicas, just give it a search.

Some people remove due to its unpredictability and some learn to use it and take advantage of it.

If you planning on drifting, best to remove it.

[sav man]

since your ecu is gone, the only way the rear wheels will turn is by force of the car tuning them (dunno if that makes sence), you need to check and see if there is anything on the rack locking the rams into place. If there isn't anything locking the rams, the rear wheels will turn by themselfs at high cornering forces.

[_x_FiReStOrM_x_]

Theres definately nothing holding the rack/rams at all.

Wouldnt the wheels still turn with the hydraulic pressure from the power steering pump? as its all still connected.

[sav man]

the ECU controles the solenoids to open and close, and the solenoids control how the rams move. so the wheels can still go floppy at high speeds. When my hicas was playing up it did this, not fun when you don't know when your wheels have a mind of there own.