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What would cause front brakes to lock up while driving?

Tiny
ITUFFCOOKIE
  • MEMBER
  • 2001 HYUNDAI XG300
  • 130,000 MILES
Already replaced Master Cylinder, Calibers and brake pads also speed sensors. Running out of ideas and money please help!
Monday, April 23rd, 2012 AT 10:27 PM

2 Replies

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Check brake pedal free play and replace both front flexi brake hoses, as one may be collapsed and this can often work as a one way valve, drive and when brakes start to lock, crack bleeder and see if it frees up.
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Monday, April 23rd, 2012 AT 10:31 PM
Tiny
ITUFFCOOKIE
  • MEMBER
  • 2 POSTS
Looked like it was the ABS pump. Took it out and the wires was burnt and exposed, and replaced with used ABS pump from a junk yard. The engine light went off and now the ABS and TCS lights stay on, and it still locks up the brakes. PS ((already checked the brake lines and replaced everything else between the cylinder to the brake pads)). Im guessing its the computer it self?
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Monday, April 30th, 2012 AT 1:29 PM

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