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Q: Can't stop when pressing the brake pedal

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The brake pedal is not allowing me to stop. In addition, the RPMs are idling between 1,000 and 2,000 when the car is in park.

A: It sounds as though your brake booster, whi...

It sounds as though your brake booster, which facilitates power assist, is not operating. The brake booster operates from the engine vacuum; if the engine vacuum is leaking somewhere, then the power assist will not work, and your engine will rev higher to attempt to stay running. Typically, you will hear a hissing noise from the engine compartment or brake pedal with a vacuum leak. A visual inspection, and possibly a smoke test with a leak detection machine, would be required, in this case.

A diagnostic inspection of your brake system from a qualified technician, such as one from YourMechanic, can help determine the issue and find the best path to repair.

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