brake booster is bad still requires more than typical pressure to stop the vehicle

2003 DODGE CARAVAN

107,000 MILES

DEC224

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After bleeding the system 2x, the pedal still requires more than typical pressure to stop the vehicle. I've read comments about an ABS thing-a-mabob at the dealer/shop. break booster bad?

Oct 12, 2011 at 11:15 PM

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SQM

AUTOMOTIVE REPAIR CONTRIBUTOR
6,383 POSTS

Hello,

When you have a stiff brake pedal and it requires more than usual force, it typically means there is an issue with the vacuum assist for the brake system. As you know the brake booster provides that assist.

Frist check the vacuum hose connected to the booster. Make sure it is secured and there is not restriction on that hose or cracks.
The brakes will require more effort due to a vacuum leak on the hose to the brake booster.

https://youtu.be/4ktw1X4W_-k

I have attached diagrams for your reference.

Please let me know of any questions.
Thank you.

Images (Click to enlarge)

Oct 7, 2021 at 3:11 PM