1. Safety First:
* Disconnect the battery: This prevents accidental short circuits.
* Wear safety glasses: Broken glass is a risk.
2. Access the Window Regulator:
* This usually involves removing the interior door panel. There are many online resources (YouTube videos are especially helpful) showing how to remove the door panel for a 1998 Ford Expedition. Search for "1998 Ford Expedition door panel removal" Be gentle to avoid breaking any clips. Take pictures as you go to help with reassembly.
* Once the panel is off, you'll see the window regulator mechanism.
3. Identify the Problem:
* Window is completely off track: This is the most likely scenario. You'll need to carefully examine the window and the regulator to see where it's come off. The window may have popped out of the clips or the track itself might be damaged.
* Window is partially off track: Try to gently guide the window back into the track. You might need to use a long, thin, flat tool (like a putty knife or a plastic trim tool) to help nudge the window into place.
* Regulator is broken: If the regulator mechanism itself is broken, you'll need to replace it. This is a more involved repair.
4. Re-installing the Window:
* Lubricate the tracks: Apply a silicone-based lubricant (NOT WD-40) to the window tracks. This will make it much easier to get the window back in place and will help prevent future problems.
* Start at the top: Carefully guide the top corner of the window back into the top track.
* Work your way down: Continue working your way down, guiding the window back into the track. Use gentle pressure and avoid forcing it.
* Check the alignment: Once the window is back in the track, test it by raising and lowering it several times. Make sure it moves smoothly and stays in the track.
5. Reassemble the Door Panel:
* Carefully put the door panel back in place, making sure all the clips snap securely.
If you're not comfortable with this repair:
* Consult a professional: This is a relatively common repair, but if you're not mechanically inclined or unsure about any step, it's best to take it to a qualified mechanic or auto glass shop. They have the tools and experience to do the job correctly and safely.
Important Notes:
* Year variations: While the general process is similar, minor differences exist between model years and trim levels. Make sure you are searching for videos and guides that specifically mention your 1998 Ford Expedition.
* Parts replacement: If the window regulator or track is damaged, you'll need replacement parts. Ensure you get the correct parts for your vehicle.
By carefully following these steps and using appropriate online resources for your specific vehicle, you should be able to get your passenger side window back on track. Remember safety first and don't hesitate to seek professional help if needed.
