Traction Control

[914]

Hi all,

in the VZ, which models have the traction control switch?

thanks

[Trevor 062]

My VZ is an Acclaim & has traction control..

[SAV_117]

why post in vy section lol

[PaulSV6]

Acclaim
SV6
SVZ
SS
SSZ
Lumina
Berlina
Calais
Statesman
Caprice

[Trevor 062]

Can anyone shed some light to what traction control actually does.
Off the mark & in the wet of course,if the traction control is on or off my car still goes side ways. I chased up Holden today to check if it's working & they are saying I don't have stability control to stop from going side ways, I only traction control which apparently cuts off power to the rear wheels.

[PaulSV6]

I still get my car sideways in the wet, i try not to. It reduces power the wheel that doesn't have traction & applies it to the one that does.
What i found if i was to turn left or right out of a street & gave it some stick, i can feel the back end step out but also feel the car lurch abit aswell & the whole car would become strait again.

[Trevor 062]

I still get my car sideways in the wet, i try not to. It reduces power the wheel that doesn't have traction & applies it to the one that does.
What i found if i was to turn left or right out of a street & gave it some stick, i can feel the back end step out but also feel the car lurch abit aswell & the whole car would become strait again.

Cheers Paul

[anonymousmoose]

Mate of mine whos got a parliament house Berlina always turns his traction control off. Says he gets a smoother ride from it as the control kicks in too soon, even before the wheels start spinning. I sometimes take mine off and I do notice a little better acceleration.

I thought all VY's have T/C... I might be wrong yet I thought it was across the board.

[cewing]

I find traction control in the wet a godsend. my vy berlina starts spinning it up when i give it moderate acceleration when wet, traction control cuts out the power going to the wheels.

During the dry times, its annoying when merging with heavy traffic from a standstill, you give it some stick and the power cuts out. by the time u get going again, theres a car doing 70km/h up ur tail

[SAV_117]

mine doesnt

[PaulSV6]

With mine, while ur driving, go to turn the T/C off, park the car, go to do something, come back. The T/C will be on when u turn the car back on.
I agree there is a smoother ride with it off, tats cause the car doesnt lurch when give it some stick.

[drippy]

does anyone know of a way to have it off by default? instead of always having to press the button after you start?

gravel roads are a pain with it, out the driveway every morning and it kicks in

[taztassio]

I still get my car sideways in the wet, i try not to. It reduces power the wheel that doesn't have traction & applies it to the one that does.
What i found if i was to turn left or right out of a street & gave it some stick, i can feel the back end step out but also feel the car lurch abit aswell & the whole car would become strait again.

incorrect, it just reduces throttle.

it cant change sides that it gives power to. it isnt an air locker.

Its POS, its more dangerous if you start pumping a bit of power through the rear, and it singles/doubles and doesnt work, can make your rear end go strange

[PaulSV6]

incorrect, it just reduces throttle.

it cant change sides that it gives power to. it isnt an air locker.

Its POS, its more dangerous if you start pumping a bit of power through the rear, and it singles/doubles and doesnt work, can make your rear end go strange

Yeah, if u reduce throttle then u reduce the power, same thing!!

Ive lost u there! Ur car must do wired things then, cause mine doesnt do that.

[Calaber]

I think you will find that Traction Control works as an adjunct to ABS. It doesn't control the throttle, it controls the brakes to the rear wheels. As soon as the ABS sensor detects one axle starting to spin and lose traction, TC applies a braking force to that wheel to bring the wheelspin back under control. The force applied is extremely quick and much less than you would apply yourself, but it happens so quickly that the spin is controlled without the wheel locking up. Also,it isn't a constant pressure, it flucutates on and off, extremely quickly, again, faster than you could do yourself with the brake pedal.

[taztassio]

nah it doesnt control brakes.

its loss of throttle.

cut your rear lines and you discover!

also, thats coz i am pumping 160rwkw thru a single and a shift kitted auto that gives the diff hell, so it doesnt cope well

[wingwang99]

^^^^ Second that, it works on throttle.

When i run my lpg trac control is always off and can't be used as the lpg is injected using a different system

[alien]

OK, to clear things up:

Traction control intervention operates in three stages; engine spark retard, throttle angle reduction, and rear brake application.

The first is less noticeable; with only a power sag from the engine being felt as the ABS/ETC control module requests the PCM to retard the engine spark as appropriate.
If the ABS/ETC control module continues to detect the rear wheels are rotating faster than the front, it will request the throttle relaxer control module to reduce the throttle angle.
The final step taken to control the rear wheel is for the ABS/ETC control module to apply the rear brakes, thus reducing the torque to the rear wheels.

ABS and Electronic Traction Control are the same system just doing different jobs. One protects from brake lock up, the other one stops the wheels spinning. Each wheel has a speed sensor to give the system all this info.

This information is for VTs onwards straight from Holden.

[soop]

It doesn't work the throttle.
It uses the ABS and retards the ignition timing...

[alien]

soop, i guarnatee you it does. Get a Holden technician to explain it to you. But that paragraph in my above statement tells you the EXACT steps that are programmed into the vehicle. That is from the Holden manual, unless your trying to tell me Holden doesn't know what they did to their own vehicles? That's what was in the VT's onwards.... i can only gurantee its valid for up to the VYs (inclusive). Not sure if the VZ's are the same, i'd have to check that.

[cpbait]

traction control uses the abs to pulsate the brakes to slow stop the wheels spinning as far as i know,
also can someone clarify this for me, do all vy ss's have traction control and if so do they all have a traction control switch?
as my vy ss is a srz 1 auto and doesn't have a traction control switch and will still spin it up, but will do as stated in a post above that you will feel the back end twitch out around a corner say and the ass end will gently bring itself back straight, also its an ex unmarked cop car so not sure if that makes a difference or not.

[alien]

cpbait, all SS's have the Traction control..... EXCEPT in the base of the BT1's

Traction Control is deleted from "SS" models with P.O. A8V

However, the BT1's DO have an LSD, which will help!

[soop]

My SS has an LSD.

It doesn't help all that much.

[buzuki]

yeah some later commo's vy-vz, have traction control but no switch to turn it off, the switch sits behind your window switches.

If you want it off cut the wire :P Pin B11 i think, its black/white trace

[soop]

Is it possible to reverse the switch?

So that TC is always off., and you switch it on with the button?
Cutting wires is very ghetto...