After replacing the brake booster and bleeding the system, the brake pedal went to the floor?

2010 LINCOLN MKX
14,000 MILES • 3.5L • 6 CYL • 2WD • AUTOMATIC
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MVW2917
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  • 2 POSTS
I changed my brake booster after i changed it i bled the brakes, but the brakes got a little stiff not hard. When i turned the car on the brake pedal, went to the floor, so i changed the master cylinder. I bled the system again and the same problem accord. When i turned on the car the brake pedal went to the floor.
Aug 5, 2023 at 11:29 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,248 POSTS
Hi,

Believe it or not, the parking brake system requires bleeding as well. Take a look at the picture below. That is the portion for the parking brake bleeding.

Try this and let me know if it resolves the issue.

Take care,

Joe

See pic below.
Image (Click to enlarge)
Attached Media
Aug 5, 2023 at 3:48 PM
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MVW2917
  • MEMBER
  • 2 POSTS
Okay, thanks I'm going to try it in the morning or Monday.
Aug 5, 2023 at 4:16 PM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,248 POSTS
Hi,

You are very welcome. If you have a chance, let me know if it takes care of the issue. If it doesn't, we may need a bidirectional scan tool to actuate the ABS module.

Let me know.

Joe
Aug 5, 2023 at 4:31 PM
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