The brake booster takes vacuum generated by the engine from the intake manifold and applies that vacuum to amplify the pressure you exert on the pedal when you press on the brakes. A light application of the brakes means that the booster itself creates more pressure on the brake master cylinder to ensure that your vehicle stops quickly and without problems. When replacing your brake booster, take care not to remove the check valve in between the line that goes from your intake manifold to the brake booster itself. Removal of this check valve means that pressure that’s already stored in the brake booster will leak out instead of being retained and kept for use in case your motor stops or is not running. If your brake booster is leaking, or your brake pedal feels odd, it might be time to look at replacing the brake booster, as the internal seals and diaphragms might be leaking and causing insufficient pressure to your hydraulic braking system.
Commonly Asked Brake Booster Questions about our OEMSPEC Program
I think I have a brake booster failure, but Im not quite sure. What are some of the symptoms?
A stiff pedal, lack of braking power and a overall loss of braking performance would be a good indicator of your brake booster failing or dying.
Where is my brake booster located?
The brake booster is usually located on the firewall, and you should be able to follow a large vacuum line from the intake manifold to the brake booster itself.
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