Here's what you need to do:
Option 1: Using a Professional Scanner/Bleeding Tool
This is the recommended method. A professional-grade scan tool capable of activating the ABS system's pump and bleed function is necessary. This tool forces fluid through the system, ensuring all air is expelled. This is the safest and most effective way to bleed the brakes, especially on vehicles with ABS. A mechanic or auto parts store with diagnostic equipment can perform this.
Option 2: Gravity Bleed (Less Reliable and Risky)
This method is less effective and relies heavily on gravity to remove the air, making it considerably less reliable and only a temporary solution at best. It should only be considered if you lack access to a scan tool and understand its limitations.
* Prepare: Gather your tools: wrench for the bleeder valves (usually 8mm or 10mm), clear tubing, a container to collect fluid, and fresh brake fluid (DOT 3 or DOT 4, check your owner's manual). Have a helper to pump the brake pedal.
* Open Bleeder Valves: Slightly loosen each bleeder valve, one at a time, in the standard order (rear passenger, rear driver, front passenger, front driver). Let gravity do its work for an extended period.
* Monitor: Keep an eye on the brake fluid reservoir to ensure it doesn't run dry. Top it off as needed.
* Important Considerations: This method is likely to leave air trapped within the ABS module, rendering it ineffective.
Critical Points to Remember:
* Brake Fluid is Corrosive: Wear safety glasses and gloves. Brake fluid will damage paint and other surfaces.
* ABS Module: Attempting to bleed the brakes without a scan tool may damage the ABS module, leading to costly repairs.
* Fluid Level: Maintain the brake fluid level in the master cylinder reservoir at all times. A low level can introduce air into the system.
* Professional Assistance: If you're unsure about any step, it's highly recommended to take your vehicle to a qualified mechanic. Improperly bled brakes are dangerous.
In summary: The gravity bleed method for a Windstar with ABS is unreliable. Using a scan tool capable of activating the ABS pump is the only sure way to properly bleed the brakes and avoid potential damage. If you are not comfortable performing either of these, you should seek professional help.
