Front brakes lock when attempting to brake

1996 CHEVROLET ASTRO
145,000 MILES
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JIMCAR
  • MEMBER
  • 3 POSTS
Front brakes locking when I press the brakes and do not release. I changed the master cylinder and the hydro-boost and the problem still exists. please some body what I can do?
Feb 5, 2018 at 6:35 PM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
Good morning.

Check the front brake hoses that attach to the calipers. it is common for them to become restricted and not allow the brake pads to release.

Roy
Feb 5, 2018 at 6:41 PM
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JIMCAR
  • MEMBER
  • 3 POSTS
Thanks very much. I will check and let you know .
Feb 5, 2018 at 7:12 PM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
You are welcome. keep us updated.

Roy
Feb 5, 2018 at 7:21 PM
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JIMCAR
  • MEMBER
  • 3 POSTS
In the same van if the proportion valve is not good can that be what causes the front brakes to lock?
Feb 6, 2018 at 9:09 PM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
yes it can, but it controls two wheels so the other wheel which in your case would be the opposite rear.

Roy
Feb 6, 2018 at 10:09 PM
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