Here's how to troubleshoot:
1. Identify the Specific Fuse: Make absolutely sure you're replacing the correct fuse. The owner's manual will show the fuse box diagrams and which fuse controls the power sliding doors.
2. Inspect the Wiring Harnesses: This is the most likely culprit. The wiring harnesses for the sliding doors are subject to wear and tear, especially where they flex as the doors move. Carefully inspect:
* The harnesses at the door jambs: Look for chafing, broken insulation, pinched wires, or any signs of damage. Pay close attention to the areas where the wires bend as the door opens and closes.
* The harnesses inside the doors: This requires removing the door panels (relatively easy on Windstars). Inspect the wiring thoroughly for any damage. Look for places where wires might be rubbing against metal parts.
* The motor wiring connections: Check the connections to the sliding door motors themselves for corrosion, loose connections, or damaged wires.
3. Check the Sliding Door Motors: While less likely than wiring problems, a faulty motor can draw excessive current and blow a fuse. This is harder to diagnose without specialized tools, but if you've thoroughly checked the wiring and still have problems, the motor itself might be the issue.
4. Check for Intrusions: Anything obstructing the door's travel can cause excessive strain on the motor and potentially a short. Make sure there's nothing jamming the mechanism, such as toys, debris, or even ice in cold weather.
5. Consider a Professional: If you're not comfortable working with automotive electrical systems, it's best to take your Windstar to a qualified mechanic. They have the tools and expertise to properly diagnose and repair the problem. Improperly dealing with electrical issues can lead to further damage or even fire hazards.
Important Safety Note: Always disconnect the negative battery cable before working on any automotive electrical system. This will prevent accidental shorts and shocks.
By systematically checking these areas, you should be able to pinpoint the cause of the blown fuse and fix your Windstar's sliding doors. Remember to replace the fuse *after* you've fixed the underlying problem, otherwise, you'll keep blowing fuses.
