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Back brakes are grabbing before car stops

Tiny
AJBLOCTON
  • MEMBER
  • 1986 MERCURY MARQUIS
  • 300,000 MILES
My 1986 mercury grand marquis, would this be a brake pressure differential valve causing the problem? Rear brakes grabbing when stopping
Wednesday, January 11th, 2012 AT 10:00 PM

4 Replies

Tiny
RIVERMIKERAT
  • MECHANIC
  • 6,110 POSTS
Could be or it could be the brakes are improperly adjusted.
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Wednesday, January 11th, 2012 AT 10:11 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
What type of brakes do you have on the rear?
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Wednesday, January 11th, 2012 AT 10:11 PM
Tiny
AJBLOCTON
  • MEMBER
  • 2 POSTS
Tried brake adjustment. Reardrum, front disk
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Wednesday, January 11th, 2012 AT 10:14 PM
Tiny
RIVERMIKERAT
  • MECHANIC
  • 6,110 POSTS
Check the wheel cylinders, they may be contaminated and not allowing the shoes to retract.
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Wednesday, January 11th, 2012 AT 11:18 PM

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