C5 Tech Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

ABS unit leaking

Thread Tools
 
Search this Thread
 
Old May 14, 2009 | 10:05 AM
  #1  
MotleyDrew's Avatar
MotleyDrew
Thread Starter
Melting Slicks
15 Year Member
 
Joined: Oct 2005
Posts: 2,877
Likes: 9
From: Ottawa Ontario
Default ABS unit leaking

Hello All

Just wondering if anyone else has had this issue? It seems that my ABS unit is leaking from somewhere but no from the brake line connections. Any body have any ideas or expeience. It seems like it may be comming out of the case somewhere as the top visible opart is clean put under neith is wet and dirty.

let me know
Reply
Old May 14, 2009 | 02:47 PM
  #2  
Bill Curlee's Avatar
Bill Curlee
Tech Contributor
Supporting Lifetime Gold
Veteran: Navy
25 Year Member
Liked
Community Favorite
 
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Default

The EBTCM/BPMV should always be clean and dry. Recommend wiping it down and cleaning it to help pin point the issue. What color is the fluid that is leaking??

Once its clean and dry, have some one pump the brakes while you carefully inspect it and look for the leak source. The EBTCM side of the module is or should be DRY!!!! It contains ZERO fluid. The BPMV side is full of brake fluid. Concentrate on that side of the module.

Bill
Reply
Old May 14, 2009 | 02:54 PM
  #3  
MotleyDrew's Avatar
MotleyDrew
Thread Starter
Melting Slicks
15 Year Member
 
Joined: Oct 2005
Posts: 2,877
Likes: 9
From: Ottawa Ontario
Default

Originally Posted by Bill Curlee
The EBTCM/BPMV should always be clean and dry. Recommend wiping it down and cleaning it to help pin point the issue. What color is the fluid that is leaking??

Once its clean and dry, have some one pump the brakes while you carefully inspect it and look for the leak source. The EBTCM side of the module is or should be DRY!!!! It contains ZERO fluid. The BPMV side is full of brake fluid. Concentrate on that side of the module.

Bill
Hey bud

Its definatly brake fluid by the taste It has that zing to it

My car is as clean as a whistle and its still very hard to pinpoint. Once the fans turn on it will move it around a bit. All the lines are snug and look fine. To me it looks like it is comming from underneith the unit somehow.

This weekend I will look at it further...there seems to be no issues with braking and I have a feeling this has been going on for over a year now. As I though it was the Power steering rack leaking prior to noticing this and tasting the fluid.

thanks for the help
Reply
Old May 14, 2009 | 05:40 PM
  #4  
Bill Curlee's Avatar
Bill Curlee
Tech Contributor
Supporting Lifetime Gold
Veteran: Navy
25 Year Member
Liked
Community Favorite
 
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Default

Its definatly brake fluid by the taste It has that zing to it


The BPMV out of the car looks like this: (This is a 2001 - 2004 EBTCM)










This is the bottom of the unit. Its important to remove all of the fluid on the unit and inspect this area:



You can look for leaks with the car off. Just clean the unit and have some press the brake firmly and hold pressure on it while you check for leaks.

BC
Reply
Old May 14, 2009 | 06:12 PM
  #5  
MotleyDrew's Avatar
MotleyDrew
Thread Starter
Melting Slicks
15 Year Member
 
Joined: Oct 2005
Posts: 2,877
Likes: 9
From: Ottawa Ontario
Default

thanks Bill for the pics I think it is comming from the bottom of the unit. I have had the unit out numerous times and am wondering with all the re and re's on it if it was damaged a bit which has cause the leak.

thanks again !
Reply
Old Jul 10, 2009 | 10:59 PM
  #6  
MotleyDrew's Avatar
MotleyDrew
Thread Starter
Melting Slicks
15 Year Member
 
Joined: Oct 2005
Posts: 2,877
Likes: 9
From: Ottawa Ontario
Default

Well...my little leak turned into a major one. Gotta get this thing out of the car now and fix it. Hopefully this is something I can do my self and doesn't require hard to get seals or anything like that "crossed finger". Applying any pressure to brakes now pisses fluid out the bottom of the unit. F*&kin GM...20,000 miles and an ABS pump leaks "shakes head"
Reply
Old Jul 11, 2009 | 10:42 AM
  #7  
timemender's Avatar
timemender
Burning Brakes
 
Joined: Aug 2006
Posts: 1,217
Likes: 5
From: Stark County Ohio
Default

Originally Posted by MotleyDrew
Hey bud

Its definatly brake fluid by the taste It has that zing to it
........................................ .............thanks for the help
You made my day.

Never in all my years (too many to count, can’t count that high anyway), have I heard of identifying automotive fluids by TASTE.

I hope you don’t work at a nuclear power plant. I can see your tongue glowing now.


-
Reply
Old Jul 11, 2009 | 01:41 PM
  #8  
MotleyDrew's Avatar
MotleyDrew
Thread Starter
Melting Slicks
15 Year Member
 
Joined: Oct 2005
Posts: 2,877
Likes: 9
From: Ottawa Ontario
Default

Originally Posted by timemender
You made my day.

Never in all my years (too many to count, can’t count that high anyway), have I heard of identifying automotive fluids by TASTE.

I hope you don’t work at a nuclear power plant. I can see your tongue glowing now.


-


Sure fire way to make sure what it is
Reply

Get notified of new replies

To ABS unit leaking

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 10:08 PM.

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