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Bleeding the brake system

Tiny
MARRYJOE
  • MEMBER
  • 1997 CADILLAC DEVILLE
  • V8
  • 2WD
  • AUTOMATIC
Hi, this 97 cad. Deville north star, sitting still the brake pedal slowly move almost to the floor when I drive it, it stop with the brake warning light on. How do you bleed the brake system with the motor running or off thank you
Thursday, January 27th, 2011 AT 9:29 PM

1 Reply

Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
That's not a bleeding problem. Assuming it doesn't have an external leak anywhere, it would be bypassing internally. That's usually caused by a faulty master cylinder but can also be caused by a faulty ABS hydraulic unit.
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Thursday, January 27th, 2011 AT 9:52 PM

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