Current Classifieds

1979 pinto
Date: 04/19/2018 02:02 am
I need a 1976 hood
Date: 12/19/2016 06:02 pm
Seeking reveal molding for driver's door for a 1980 Squire Wagon
Date: 11/08/2020 02:10 pm
1979 hatch needed
Date: 05/13/2018 08:52 pm
Various parts for 1980 Pony (good to N.O.S. condition
Date: 06/07/2018 01:45 am

Date: 08/27/2017 10:23 am
1979 Pinto Sedan Delivery

Date: 06/15/2019 03:30 pm
Pinto Watch
Date: 06/22/2019 07:16 pm
Wanted: automatic transmission shifter
Date: 07/21/2017 11:49 am
1974 Pinto Drivers door glass and parts

Date: 02/28/2018 09:33 am
79-80 fenders, hood, rallye wheels, light buckets, etc, C3 trans
Date: 01/04/2017 04:07 am
1974 Pinto Passenger side door glass and door parts

Date: 02/28/2018 09:18 am

Author Topic: brakes  (Read 142 times)

0 Members and 1 Guest are viewing this topic.

Offline stan

  • Pinto Driver
  • *
  • Posts: 1
  • FeedBack: +0/-0
  • Another Pinto Driver

  • Total Badges: 1
    Badges: (View All)
    Topic Starter
« on: October 19, 2019, 09:46:15 AM »
My front brakes stay on after releasing the bake pedal. Both wheels. Could proportioning valve be the issue. I have installed new master and boaster. Can I by pass the valve and run brake line to front direct from master. Is that possible. 1980 pinto.


Offline oldkayaker

  • Pinto Sr. Member
  • ****
  • Posts: 749
  • FeedBack: +113/-0
  • Gender: Male

  • Total Badges: 5
    Badges: (View All)
    Topic Starter Signature Windows User Tenth year Anniversary Fifth year Anniversary
Re: brakes
« Reply #1 on: October 20, 2019, 02:33:47 AM »
I have had a similar issue a couple times with other cars when the caliper puck did not retract sufficiently.  One time it was cured by exercising the caliper (collapse with C-clamp and pump up again a few times).  The other time I installed rebuilt calipers when the exercising did not work.  Warped rotors can act like this too, but thankfully I never experienced that. 

I suspect what you are referring to as a  proportioning valve is that little rectangular brass device with a wire hooked to it, it is a switch for the brake trouble light and should not cause this.
Jerry J - Jupiter, Florida

Offline warhead2

  • Pinto Full Member
  • ***
  • Posts: 180
  • FeedBack: +4/-0
  • Gender: Male
  • 77 Crusin Wagon

  • Total Badges: 6
    Badges: (View All)
    Mobile User Topic Starter Poll Voter Windows User Tenth year Anniversary Fifth year Anniversary
Re: brakes
« Reply #2 on: October 21, 2019, 09:48:40 AM »
I had a similar incident with my chevy blazer. Come to find out that old rubber brake lines brake down inside and make a flapper valve lets fuild in but not out quickly enough. So might try a new rubber brake line if it hasn't been replaced in a long time. Just might be a simple fix.

Sent from my SAMSUNG-SM-G930A using Tapatalk