Tools You'll Need:
* Brake fluid: Use DOT 3 brake fluid. Make sure it's fresh and clean. Contamination can ruin your brake system.
* Brake bleeder wrench: A size 8 or 10 mm wrench is typically needed, but check your Freestar's specifications to be sure. An open-end wrench is usually preferable to a socket.
* Clear tubing: Long enough to reach a container and stay submerged.
* Container: To catch the old brake fluid. A jar or bottle works well.
* Wrench (optional): For holding the caliper bracket bolts (if working with rear brakes)
* Gloves: Brake fluid is corrosive.
* Shop rags or paper towels: For cleaning up spills.
Procedure:
1. Locate Bleeder Valves: The bleeder valves are located on each caliper (front and rear). Consult your Freestar's repair manual for the exact locations. Usually, there's one on each caliper.
2. Prepare the System: Have your helper sit in the driver's seat with their foot on the brake pedal. Make sure the brake fluid reservoir is full. Top it off if necessary.
3. Bleeding Order: The standard order is Rear Passenger Side (Right Rear), Rear Driver Side (Left Rear), Front Passenger Side (Right Front), Front Driver Side (Left Front). This ensures the farthest point gets bled first, pushing air towards the master cylinder. Always follow this order.
4. Bleeding Process (per wheel):
* Attach the clear tubing to the bleeder valve and submerge the other end in your container of brake fluid.
* Have your helper firmly pump the brake pedal 3-4 times and then hold it down.
* Open the bleeder valve slowly using your wrench. You should see brake fluid flow through the tube. If air bubbles come out, you will see a change in the fluidity of the flow.
* Once the flow is steady and free of bubbles, close the bleeder valve.
* Have your helper release the brake pedal.
* Repeat steps 4-7 several times for each wheel until no more bubbles appear and the fluid runs clear. It might take many pumps to clear all of the air.
5. Refill Brake Fluid Reservoir: Keep an eye on the brake fluid reservoir throughout the process. Add more fluid as needed to prevent the reservoir from becoming empty. An empty reservoir will allow air to enter the system.
6. Check for Leaks: After bleeding all four wheels, carefully inspect all connections and bleeder valves for leaks.
7. Test Brakes: Once completed, pump the brake pedal several times to check for a firm pedal. If the pedal feels spongy or goes to the floor, repeat the bleeding process, carefully checking for leaks. If the problem persists, you may have a more serious brake issue that requires professional attention.
Important Considerations:
* Power Brake Booster: The power brake booster assists in applying the brakes. If you are bleeding the brakes and not getting a good pedal, ensure your battery has enough voltage.
* ABS System: The 2004 Ford Freestar likely has an Anti-lock Braking System (ABS). Bleeding the ABS system is more complex and often requires specialized tools and knowledge. If you suspect air in the ABS system, you should take your vehicle to a qualified mechanic. Standard brake bleeding will not remove air from the ABS system.
* Repair Manual: A repair manual specific to your 2004 Ford Freestar is highly recommended. It will provide detailed diagrams and instructions.
If you are not comfortable performing this task yourself, take your Freestar to a qualified mechanic. Improperly bled brakes are dangerous.
