- Brake fluid leak: If there is a leak in the brake fluid line, it can cause the brake pedal to feel spongy and the brakes to apply slowly. As the brake fluid leaks out, the brake pedal will eventually become solid and the brakes will lock up.
- Faulty brake master cylinder: The brake master cylinder is responsible for creating the hydraulic pressure that forces the brake fluid through the lines and to the calipers. If the master cylinder is faulty, it can cause the brakes to apply slowly or intermittently.
- Sticking brake caliper: A sticking brake caliper can cause one or more of the wheels to lock up. This can happen if the caliper piston is damaged or if there is a buildup of rust or debris on the caliper slide pins.
- Vacuum booster failure: The vacuum booster helps to amplify the force applied to the brake pedal. If the vacuum booster fails, it can cause the brakes to feel hard and difficult to apply.
If you are experiencing any of these problems, it is important to have your vehicle inspected by a qualified mechanic as soon as possible.
