Car begun making noise when I brake

Hi,

Front brake pads and rotors really aren't too hard to do. If you do it yourself, make sure to purchase lifetime parts so you'll never have to pay for the parts again.

You can expect brake pads to last approximately 25,000 miles. However, that can change based on terrain and driving habits.

To start, here is a link that shows in general how it's done. You can use this as a
guide:

https://youtu.be/_iFN5xaJjJY

and

https://www.2carpros.com/articles/how-to-replace-front-brake-pads-and-rotors-fwd

Here are the directions specific to your vehicle. The pics below correlate with the directions.

Removal and Installation

WARNING: Do not use any fluid other than clean brake fluid meeting manufacturer's specification. Additionally, do not use brake fluid that has been previously drained. Following these instructions will help prevent system contamination, brake component damage and the risk of serious personal injury.

WARNING: Carefully read cautionary information on product label. For EMERGENCY MEDICAL INFORMATION seek medical advice. In the USA or Canada on Ford/Motorcraft products call: 1-800-959-3673. For additional information, consult the product Material Safety Data Sheet (MSDS) if available. Failure to follow these instructions may result in serious personal injury.

WARNING: Always install new brake shoes or pads at both ends of an axle to reduce the possibility of brakes pulling vehicle to one side. Failure to follow this instruction may result in uneven braking and serious personal injury.

CAUTION: Brake fluid is harmful to painted and plastic surfaces. If brake fluid is spilled onto a painted or plastic surface, immediately wash it with water.

1. Check the brake fluid level in the brake master cylinder reservoir.
If required, remove the fluid until the brake master cylinder reservoir is half full.

2. Remove the wheel and tire.

3. CAUTION: Do not pry in the caliper sight hole to retract the pistons, as this can damage the pistons and boots.

CAUTION: Do not allow the brake caliper to hang from the brake caliper flexible hose or damage to the hose can occur.

Remove the 2 brake caliper guide pin bolts and position the caliper aside.
Support the caliper using mechanic's wire.
To install, tighten to 28 Nm (21 lb-ft).

4. CAUTION: Protect the caliper pistons and boots when pushing the caliper pistons into the caliper piston bores or damage to components may occur.

If installing new brake pads, using a C-clamp and a worn brake pad, compress the disc brake caliper pistons into the caliper.

5. NOTE: Wear indicator is on the inner pad leading edge.

To install, reverse the removal procedure.
Fill master cylinder reservoir with specified brake fluid.
Apply brakes several times to verify correct brake operation.

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Rotor Replacement

2008 Ford Focus L4-2.0L
Disc Removal and Installation, Front
Vehicle Brakes and Traction Control Disc Brake System Brake Rotor/Disc Service and Repair Removal and Replacement Disc Removal and Installation, Front
DISC REMOVAL AND INSTALLATION, FRONT
Brake Disc

Removal and Installation
1. Remove the wheel and tire.
2. Remove the brake hose retaining clip and hose from the support bracket.

3. CAUTION: Do not allow the caliper to hang by the brake hose or damage to the hose can occur.

Remove the 2 brake caliper anchor plate bolts.
Discard the bolts.
Support the brake caliper and anchor plate assembly using mechanic's wire.
To install, tighten new bolts to 125 Nm (92 lb-ft).

4. Remove the brake disc.
5. To install, reverse the removal procedure.
Apply brakes several times to verify correct brake operation.

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.