i just got a '99 Z28

It has ASR... I know it is a traction control, but how does it function? What does it do??



I'm loving the LS1......

 

ASR is pretty much traction control.

If you hit the gas too hard, it'll apply the brake to the spinning wheel, push the gas pedal against your foot and the LOW TRAC light will come on.

I also believe that it holds the car back too. I've only driven with it off a few times and it feels like the car accelerates faster with it off.

 

The ASR kills engine power when it senses a slip in the wheels. In the rain or snow it keeps you from fishtailing when you give it too much gas. Other than that its best to leave it off. On mine the power is pretty much the same on or off. It only kicks in when I floor it and the rubber doesnt connect with the ground.

 

I'm not going to dispute, 'cause I don't have ASR in my car, but are you sure that the brakes apply? I thought that ASR would simply reduce engine power until traction was re-gained, but I didn't think that it was advanced enough to actually apply the brakes?? (remember, we're talking about the F-body, NOT a 'Vette!!).

 

When I had my tranny worked on not too long ago, my car was on the lift and the dude was moving the rear tires and each one moved in the opposite direction from each other, so I asked why. He said because my car doesn't have posi-traction. I told him I thought that's what ASR is. He said that ASR applies the brake to the slipping wheel.

Beats the hell out of me, this guy KNOWS cars so I'm sure there's a shred of truth to what he told me.

 

The computer kills the engine power

 

Traction control kills engine power......if it were to apply the brake to a wheel with no traction you would spin when that wheel found traction.

 

I hate when I am driving and I hit a slick spot and the thing kicks my gas pedal up. Makes me very angry, it seems like hours before the traction control light goes off and lets me get on the gas again.

 

My ASR is my foot coming off of the gas petal (which is not often )

 

Does it also feel like you dont have the same power after the light goes off?? I swear that i lose timing every time i go Lo trac, and the computer doesnt give it all back to me when normal driving resumes....but it could all be in my head too.

 

Hmmm, well all Z28s came with a limited slip diff. You dont have posi-traction as in the locked unit from the old muscle car days but punch teh gas and both tires will spin. A lot of people use limited slip and posi interchangably so I'm not sure what he was trying to say when he mentioned you had no posi.

 

Yeah, thats probably to keep you from loosing traction again moments after the first slip. When I slam the gas right after the light goes off the RPMs take forever to climb and the tranny doesn't downshift, its emotionally painful for me.

 

SFB767, That shop must have no idea how a Torsen Diff. works. It has no pre-load so when in the air 95% of the time the wheels will spin like it has a open Diff.

 

Ditto!

Even when I drove through this stuff last winter, I never once thought "gee, I wish I had ASR right now"..........keep your foot out of it! I'd be pi$$ed off if the CAR was trying to control ME!!! The reason I have pedals and a steering wheel are so that I can control the CAR!!!

 

I guess not.

How does a Torsen Diff. work?