ABS question / concern
Thread Starter
Heel & Toe
Joined: Oct 2004
Posts: 20
Likes: 0
From: Florence Ky
ABS question / concern
Hi all, I have a C4 not sure of all the mods that may have been done. Anyway, I have been hearing the ABS noise especially after just starting the car. Brakes are working fine, although I know that new rear rotors are diffentely needed. They are bad but I checked the exisiting pads and they look new. I will probably be replacing rotors and pads this winter.
Can anyone tell me if I should be worried about the ABS noise? This is the same noise you hear when braking on wet/icey pavement. Last only for a second, but come and goes.
Thanks
Can anyone tell me if I should be worried about the ABS noise? This is the same noise you hear when braking on wet/icey pavement. Last only for a second, but come and goes.
Thanks
Le Mans Master
Joined: Jan 2002
Posts: 5,320
Likes: 4
From: Kyle TX (Because Mojo Made me fill it in)
If it is only happening when you first start the car and doesnt come back during the drive, you're fine. The pump cycles as a part of the system's self check when you first start up the car.
Burning Brakes
Joined: Dec 2002
Posts: 1,199
Likes: 4
From: Cairns Australia
ABS self tests on startup when car reaches a certain speed, only 2 - 5 mph I think. Mine does it as I reverse out of the garage.
If it happens at other times then I'm not sure what that could be - if it is the ABS then could be a loose connection making it think you have just started up, or a faulty sensor applying the ABS too early...etc
S'nut
If it happens at other times then I'm not sure what that could be - if it is the ABS then could be a loose connection making it think you have just started up, or a faulty sensor applying the ABS too early...etc
S'nut
Elite Torch Red Member
Joined: Sep 1999
Posts: 57,805
Likes: 23
From: Exit 89 GSP,Lakewood,NJ The Land Of Mojo
Cental/South NJ Events Coordinator
CI 1-2-3-4-5-6-7-8-9-10-11-12 Vet
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St. Jude Donor '03-'04-'05-'06-'07
ABS is overrated, my ABS hasn't kicked in unless I purposely locked them up in the rain or sand just to see if the "ABS Active" light would come on, well it does come on when I'm out in the snow.
But in the old days we had to rely on ourselves, so if the ABS stopped working, you'd be alright as long as the brakes are working.
But in the old days we had to rely on ourselves, so if the ABS stopped working, you'd be alright as long as the brakes are working.
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Burning Brakes
Joined: Nov 2002
Posts: 807
Likes: 21
From: Los Altos CA
My ABS comes on quite frequently in normal driving. All I have to do is hit a bump while braking. The harsh suspension causes the wheel to momentarily come off the road. This also adversely affects handling when on rough roads.
Le Mans Master
Joined: Mar 2004
Posts: 8,700
Likes: 298
From: Ft. Lauderdale Fl
ABS noise....
The ABS runs a test when you first start the car and goes off as soon as you pick up speed. As far as new rotors, this is an easy and cheap fix to do on all four. You'll love the difference.
Melting Slicks
Joined: May 2004
Posts: 2,286
Likes: 2
From: Stamping Ground KY
Originally Posted by C4.5
I stopped by Tom Gill Chevorlet today as well and they said the same thing.
Thread Starter
Heel & Toe
Joined: Oct 2004
Posts: 20
Likes: 0
From: Florence Ky
Originally Posted by JCD
Heck, you're just down the road from McClusky chevrolet in Cincinnati, they've got a couple of GM certified Corvette mechanics on hand, give them a call if anything ever really breaks...
Team Owner
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
Originally Posted by white90conv
My ABS comes on quite frequently in normal driving. All I have to do is hit a bump while braking. The harsh suspension causes the wheel to momentarily come off the road. This also adversely affects handling when on rough roads.
The reality is this, the Vette's suspension, even in its softest configuration, is too stiff for it's own good. It causes the tires to lose contact with the road under rough conditions, which, is a very bad thing.
The transverse leaf springs are the culpret, get rid of those POS's and 99% of the problem goes away.
Melting Slicks
Joined: May 2004
Posts: 2,286
Likes: 2
From: Stamping Ground KY
Originally Posted by bogus
The issue behind your observation was discussed in a thread last week regarding the handling dynamics of an 04 BMW 330 vs a 93 Vette.
The reality is this, the Vette's suspension, even in its softest configuration, is too stiff for it's own good. It causes the tires to lose contact with the road under rough conditions, which, is a very bad thing.
The reality is this, the Vette's suspension, even in its softest configuration, is too stiff for it's own good. It causes the tires to lose contact with the road under rough conditions, which, is a very bad thing.
Perhaps it's because I don't have the Z07 handling package, but my '93 is almost too soft for a sports car, it's certainly not jarring like the '87 I've driven.
If we're just looking for cars that are good on rought terrain, try an Evo VIII rally car, they make everyone look slow.
But if ABS is coming on during regular driving, something is broke...
Team Owner
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
Originally Posted by JCD
What a strange comparison it was...
Perhaps it's because I don't have the Z07 handling package, but my '93 is almost too soft for a sports car, it's certainly not jarring like the '87 I've driven.
If we're just looking for cars that are good on rought terrain, try an Evo VIII rally car, they make everyone look slow.
But if ABS is coming on during regular driving, something is broke...
As a side note, BMW M3s will not allow the engine past 6000rpm unless all 4 wheels are going nearly, or exactly, the same speed! Makes dyno testing a real bitch.