WHERE DOES THE VACUUM COME FROM FOR THE BRAKE BOOSTER? THE BRAKE PEDAL IS VERY HARD & THE BOOSTER IS NOT GETTING ANY VACUUM, ALSO THERE IS A PORTED VACUUM SOURCE ON TOP OF THE UPPER PLENTIUM THAT IS LEAKING VACUUM & WHEN YOU PLUG IT WITH YOUR FINGER IT KILLS THE MOTOR.
POWER BRAKE BOOSTER VACUUM on 2004 Chrysler Sebring
by TCOLE in Dallas, TX on May 11, 2010
ANSWER by dandd , May 11, 2010
The Brake Booster gets its vacuum from the vacuum in the Intake Manifold through a hose. If you have a noisy vacuum leak from the top of the Intake Manifold, that can not be correct. Use the vacuum diagram on the Emissions label to guide you, so you can check and verify all the vacuum lines, it will show the brake Booster Vacuum circuit as well. Best of Luck!