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

MVW2917

MEMBER
2010 LINCOLN MKX
3.5L
6 CYL
2WD
AUTOMATIC
14,000 MILES

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.

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Saturday, August 5th, 2023 AT 6:29 PM

3 Replies

JACOBANDNICKOLAS

MECHANIC
109,755 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 make bigger)

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Saturday, August 5th, 2023 AT 10:48 PM

MVW2917

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2 POSTS

Okay, thanks I'm going to try it in the morning or Monday.

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Saturday, August 5th, 2023 AT 11:16 PM

JACOBANDNICKOLAS

MECHANIC
109,755 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

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Saturday, August 5th, 2023 AT 11:31 PM