C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Q about the ABS system...

Thread Tools
 
Search this Thread
 
Old Nov 8, 2006 | 11:55 PM
  #1  
kopbet89c4's Avatar
kopbet89c4
Thread Starter
Safety Car
 
Joined: Dec 2004
Posts: 4,088
Likes: 0
From: Poop land
Default Q about the ABS system...

How much does the full unit weigh? What are the usual costs of servicing it? How much is a remanufactured one vs a new unit and how hard is it to R/R if its toast? Thanks!
Reply
Old Nov 9, 2006 | 02:36 AM
  #2  
86PACER's Avatar
86PACER
Le Mans Master
20 Year Member
 
Joined: Jan 2003
Posts: 5,858
Likes: 7
From: Santa Maria CA
Default

Originally Posted by kopbet89c4
How much does the full unit weigh?
The pump alone weights about 10-15 pounds. The ABS computer, about 3 pounds.

Originally Posted by kopbet89c4
What are the usual costs of servicing it?
Yourself, free. Take it to a dealer for replacement, you'll be looking at a huge bill way past a grand guaranteed if it needs replacement.

Originally Posted by kopbet89c4
How much is a remanufactured one vs a new unit and how hard is it to R/R if its toast? Thanks!
New they ran about $2,200.

My suggestion, do like me. Get one off Ebay complete with ABS computer and all relays ready to go.

Some time ago, I got a pratically brand new ABS pump, ABS computer, relays, and wiring harness all for $25.00 on Ebay. That's right $25 for all of it. Shipping was another $20. So less than $50 shipped to my door. Fixed my ABS like new.

Replacement is straight foward. Remove the old, and install the new. Use teflon tape on the brake lines when you re-install the new pump. Have some rubber caps ready to plug the brake lines as you remove them.

Use a 12mm flare nut wrench to remove the brake lines at the pump, or you will round the fittings, then you're f'ed. Go to Sears and buy the wrench alone if you don't have it. 12mm size about $8.00.

Bleed brakes after you're done.

See this clean complete unit for sale on Ebay right now.

http://cgi.ebay.com/ebaymotors/CORVE...spagenameZWDVW

Be carefull with this guy I linked below though. He's been using this same picture of a clean looking ABS unit for over a year. When I was looking for one, twice I bid on his listing, and twice this he closed and ended the auction early on me for no reason with my bid on it. He won't send you the one pictured, since I've seen his auction sell several times already and he relists again with the same picture all the time. Probably too lazy to add an actual photo of the unit you're actually going to get in the mail.

http://cgi.ebay.com/ebaymotors/1986-...spagenameZWDVW

Last edited by 86PACER; Nov 9, 2006 at 04:32 AM.
Reply
Old Nov 9, 2006 | 03:37 AM
  #3  
CentralCoaster's Avatar
CentralCoaster
Team Owner
 
Joined: May 2002
Posts: 24,337
Likes: 25
From: San Diego , CA Double Yellow DirtBags 1985..Z51..6-speed
Default

You should probably just play it safe and remove it now before it malfunctions. Ah! Computers!
Reply
Old Nov 9, 2006 | 09:33 AM
  #4  
kopbet89c4's Avatar
kopbet89c4
Thread Starter
Safety Car
 
Joined: Dec 2004
Posts: 4,088
Likes: 0
From: Poop land
Default

Well, the "ABS Active" light sometimes just stays on right after it comes on once the car is moving. I pushed some connectors in and made them tight and then it started functioning normally. I'd rather have cheaper car insurance by retaining this ABS feature. But right now I'm just gonna make sure every connection is tight.
Reply
Old Nov 9, 2006 | 10:07 AM
  #5  
Wheelman's Avatar
Wheelman
Le Mans Master
20 Year Member
 
Joined: Jun 2001
Posts: 6,694
Likes: 3
From: Less Talk, More WOT | Houston TX
Default

Hmmm...thats wierd. I didn't think the "ABS Active" light was a signal of system malfunction. Does it still work? Get it up to about 40 on a wet road and then slam on the brakes and see if it kicks in.
Reply
Old Nov 9, 2006 | 10:34 AM
  #6  
kopbet89c4's Avatar
kopbet89c4
Thread Starter
Safety Car
 
Joined: Dec 2004
Posts: 4,088
Likes: 0
From: Poop land
Default

Well, the "ABS Active" light usually turns off after you hear that groaning ABS test sound as soon as I back out of the drive way. It simply fails to turn off now once I'm on the road.

I just got going fast awhile ago and yes, the car still has its ABS functioning after braking hard...

This "ABS Active" light problem started ever since I accidentally went over a speed bump too fast. I thought I fixed it the other day but now its back...
Reply
Old Nov 9, 2006 | 01:28 PM
  #7  
JrRifleCoach's Avatar
JrRifleCoach
Team Owner
20 Year Member
Veteran: Navy
St. Jude 20 Year Donor
Liked
 
Joined: Sep 2003
Posts: 20,179
Likes: 673
From: Freedom is never more than one generation away from extinction.
St. Jude '03 thru '24
Default

Sounds like the speed bump may have jarred some debris on the sensors. You may need to clean off the sensors at each corner.

Since these are magnetic, the brake dust will collect on the tips and block the signal.

I'd get an air hose and blow them off rather than trying to remove the unit/s.

You should also hoist the car up and inspect the underside for damaged wiring.


Last edited by JrRifleCoach; Nov 9, 2006 at 01:31 PM.
Reply
Old Nov 9, 2006 | 09:20 PM
  #8  
kopbet89c4's Avatar
kopbet89c4
Thread Starter
Safety Car
 
Joined: Dec 2004
Posts: 4,088
Likes: 0
From: Poop land
Default

So there is no damaged wiring. I cleaned under the sensors real good and I guess that was causing the light to be on all the time. My hands became 100% black after I got done. Problem solved... for now!

Reply

Get notified of new replies

To Q about the ABS system...

Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-7

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-8

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-9

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo




All times are GMT -4. The time now is 12:40 AM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE