Results 1 to 16 of 16

Thread: Rear Brakes Locking Up!

  1. #1
    SEi User import racer's Avatar
    Join Date
    Aug 2006
    Vehicle
    87 lx sedan[ R.I.P ] and 89 sei
    Location
    bridgewater.NS Canada
    Posts
    1,418

    Question Rear Brakes Locking Up!

    So last week my rear brakes started locking up,not sure why.I replaced the caliper,rotor and pads a couple of months ago on the driver's side to pass inspection.Everything was fine after that,so don't know why they are locking up,think I need to clean them with brake fluid but to cold out to work on them.Anyone have an idea what's going on with them.



  2. #2
    3Geez Veteran lostforawhile's Avatar
    Join Date
    Dec 2002
    Vehicle
    86 hatchback, 1990 Lincoln Towncar
    Location
    nowhere GA
    Posts
    15,401

    Re: Rear Brakes Locking Up!

    your proportioning valve is going bad, it limits rear pressure to prevent the rears from locking before the front, it also has the residual pressure valves built into it. I doubt it's the master as the brakes are split diagonally, left front,right rear, etc, so a front and a back brake would be locking or dragging

  3. #3

    Dr_Snooz's Avatar
    Join Date
    Jun 2007
    Vehicle
    1989 Accord LX-i
    Location
    Fresno, California
    Posts
    10,674

    Re: Rear Brakes Locking Up!

    Also do a visual inspection of the brakes themselves. Check for rust and wear, and re-grease all the sliding and pivot points as necessary. It's possible to have a backing plate go bad and do funky things with the rear brakes, so be aware of that too.
    Dr_Snooz

    "I like to take hammers, and just break stuff, just break stuff." - Beavis


    1989 Honda Accord LX-i Coupe, 240k miles, MT swap, rear disc swap

    Shop manual downloads available here: CLICK TO VIEW

  4. #4
    SEi User import racer's Avatar
    Join Date
    Aug 2006
    Vehicle
    87 lx sedan[ R.I.P ] and 89 sei
    Location
    bridgewater.NS Canada
    Posts
    1,418

    Re: Rear Brakes Locking Up!

    Would the pads cause a problem,the ones on the car were semi met and the one i changed were replaced with honda ones.

  5. #5
    SEi User import racer's Avatar
    Join Date
    Aug 2006
    Vehicle
    87 lx sedan[ R.I.P ] and 89 sei
    Location
    bridgewater.NS Canada
    Posts
    1,418

    Re: Rear Brakes Locking Up!

    bump!

  6. #6
    SEi User import racer's Avatar
    Join Date
    Aug 2006
    Vehicle
    87 lx sedan[ R.I.P ] and 89 sei
    Location
    bridgewater.NS Canada
    Posts
    1,418

    Re: Rear Brakes Locking Up!

    Seems like only one is locking up,the one i didn't replace.

  7. #7
    LX User VIPER1988's Avatar
    Join Date
    Sep 2008
    Vehicle
    '87 LXi Hatch, '16 EX-L V6 Coupe
    Location
    New Market, TN
    Posts
    261

    Re: Rear Brakes Locking Up!

    If its only one I doubt it would be the prop valve. More likely the caliper or the rubber line to the caliper.

  8. #8
    3Geez Veteran lostforawhile's Avatar
    Join Date
    Dec 2002
    Vehicle
    86 hatchback, 1990 Lincoln Towncar
    Location
    nowhere GA
    Posts
    15,401

    Re: Rear Brakes Locking Up!

    Quote Originally Posted by VIPER1988 View Post
    If its only one I doubt it would be the prop valve. More likely the caliper or the rubber line to the caliper.
    well there is a residual pressure valve for each rear brake built into the proportioning valve

  9. #9
    LX User VIPER1988's Avatar
    Join Date
    Sep 2008
    Vehicle
    '87 LXi Hatch, '16 EX-L V6 Coupe
    Location
    New Market, TN
    Posts
    261

    Re: Rear Brakes Locking Up!

    Never said it wasn't a possibility. Just that caliper or hose are more likely. Especially if its the original 25 year old hoses. They collapse on the inside and hold the pressure in the caliper.

    Sent from my MB886 using Tapatalk

  10. #10
    3Geez Veteran lostforawhile's Avatar
    Join Date
    Dec 2002
    Vehicle
    86 hatchback, 1990 Lincoln Towncar
    Location
    nowhere GA
    Posts
    15,401

    Re: Rear Brakes Locking Up!

    I would have gotten rid of those hoses years ago, not safe to trust a 25 year old brake hose

  11. #11
    LX User VIPER1988's Avatar
    Join Date
    Sep 2008
    Vehicle
    '87 LXi Hatch, '16 EX-L V6 Coupe
    Location
    New Market, TN
    Posts
    261

    Re: Rear Brakes Locking Up!

    Agreed. These days you can find braided steel lines cheaper than regular rubber lines. I think I paid around 70$ for the whole set.

    Sent from my MB886 using Tapatalk

  12. #12

    Dr_Snooz's Avatar
    Join Date
    Jun 2007
    Vehicle
    1989 Accord LX-i
    Location
    Fresno, California
    Posts
    10,674

    Re: Rear Brakes Locking Up!

    Quote Originally Posted by Dr_Snooz View Post
    Also do a visual inspection of the brakes themselves. Check for rust and wear, and re-grease all the sliding and pivot points as necessary. It's possible to have a backing plate go bad and do funky things with the rear brakes, so be aware of that too.
    This fool thinks you have rear drums. LOL

    I don't think your mismatched pads are helping things. The hydraulic system is designed to supply even pressure throughout. With one set of pads grabbing more aggressively than the other, expect one side to lock up sooner than the other. Pads are cheap so start there and work your way toward more expensive stuff.
    Dr_Snooz

    "I like to take hammers, and just break stuff, just break stuff." - Beavis


    1989 Honda Accord LX-i Coupe, 240k miles, MT swap, rear disc swap

    Shop manual downloads available here: CLICK TO VIEW

  13. #13
    LX User
    Join Date
    Dec 2011
    Vehicle
    1989 Accord LX - Carbeurated 2.0L Auto
    Location
    Kingston, Ontario
    Posts
    118

    Re: Rear Brakes Locking Up!

    Quote Originally Posted by Dr_Snooz View Post
    This fool thinks you have rear drums. LOL

    I don't think your mismatched pads are helping things. The hydraulic system is designed to supply even pressure throughout. With one set of pads grabbing more aggressively than the other, expect one side to lock up sooner than the other. Pads are cheap so start there and work your way toward more expensive stuff.
    I agree here, I would never replace brakes on one side of an axle without doing the same part on the other side, that's just asking for trouble.

    Otherwise I would look at the calipers and make sure they slide properly and the pistons are not seized or anything, then look at the proportioning valve.

  14. #14
    LX User Fixedit's Avatar
    Join Date
    Feb 2015
    Vehicle
    1986 LXi Sedan - 1972 F250 C/S - 1987 DX Hatch - 1977 Skylark S/R (Sold) - 2001 Hyundai Accent GS (Sold) - 1981 Suzuki GS450 (Sold)
    Location
    Oregon
    Posts
    450

    Re: Rear Brakes Locking Up!

    Did an SEi rear disc swap on my 86 LXi, new master cylinder, calipers, pads rotors etc., and installed the 4040 prop valve from the donor SEi.

    Left front caliper drags intermittently. Prop valve leaks out of the weep hole. Prop valve seems quite suspect. Grabbed a 3540 prop valve from a 3g prelude 2.0si, think I’ll be alright using that in place of the 4040?

  15. #15

    ShiRen's Avatar
    Join Date
    May 2018
    Vehicle
    87 Accord DX
    Location
    MO
    Posts
    1,277

    Re: Rear Brakes Locking Up!

    Probably. I think that you would be fine with any prop valve that works, beggars can't be choosers

  16. #16

    conozo's Avatar
    Join Date
    Jan 2005
    Vehicle
    1988 Honda Accord DX, 260,000 Miles, Daily Driver
    Location
    Fort Wayne, Indiana
    Posts
    1,162

    Re: Rear Brakes Locking Up!

    I don't think anyone could tell the difference except for that race car driver you hire to race your car on a track during the weekends.

    1988 Honda Accord LSDX-I

Similar Threads

  1. se i rear brakes
    By b20a86lude in forum For Sale
    Replies: 1
    Last Post: 08-02-2012, 01:32 PM
  2. Rear brake locking up
    By Whitehonda in forum 3geez Accords
    Replies: 15
    Last Post: 02-05-2008, 08:31 AM
  3. Big Brakes and Addco rear sway bar on sei brakes
    By EricW in forum Classic Honda Pics & Videos
    Replies: 29
    Last Post: 10-01-2007, 01:13 PM
  4. Replies: 21
    Last Post: 04-17-2006, 07:02 PM
  5. Brakes locking on
    By Orion in forum Suspension/Wheels/Tires/Brakes
    Replies: 6
    Last Post: 03-28-2004, 11:12 PM

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
This website uses cookies
We use cookies to store session information to facilitate remembering your login information, to allow you to save website preferences, to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.
     
Links monetized by VigLink