1993 s10 chevy blazer abs trouble

Reply

  #1  
Old 03-02-05, 04:29 PM
jeffj247
Visiting Guest
Posts: n/a
1993 s10 chevy blazer abs trouble

I have replaced the master cylinder 3 times with no luck. I bled the brakes with the engine off and I get good pressure. Once I start the motor the pedal goes to the floor. The abs module (or whatever you call it) has two metal pins on the back and when I press the brakes the one on the left pokes out. There are two bleeder fittings on the abs module. Should I try to bleed the air from them or what. This is a 1993 s-10 blazer 2 wheel drive with an automatic trans. 4.3 liter v-6.
 

Last edited by jeffj247; 03-03-05 at 08:27 AM.
Sponsored Links
  #2  
Old 03-03-05, 08:49 AM
Member
Join Date: Apr 2003
Posts: 174
You have replaced the master 3 times, did you bench bleed them before installation? Also, does your boost vac hold pressure. As far as bleeding the ABS, I have never been able to do it correctly, I do believe it has to be done on a machine.

PS, have you looked into your proprotion valve, these Blazers are known for awful weak brakes.
 
  #3  
Old 03-03-05, 01:46 PM
Member
Join Date: Apr 2002
Location: Pittsburgh,Pa
Posts: 2,417
What was the original problem that the master cylinder was intended to repair?You can try bleeding the abs if you want.Does your truck have 4 wheel abs or rear wheel abs?
 
  #4  
Old 03-28-05, 05:00 PM
jeffj247
Visiting Guest
Posts: n/a
After talking to a guy from Brake Check I cycled the ABS accuators by hard braking from about 40mph a couple of times. That seems to have worked. I now have good pedal. My other option according to that guy was to take it to a GMC service center and use a Tech 1 Scan Tool. I would say after the fact that anyone replacing a master cylinder on this type of vehicle should try the same thing and save the cash.
 
Reply

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread
Display Modes