1. Assessment & Safety:
* Safety First: Before you start, disconnect the negative battery terminal to prevent accidental short circuits.
* Visual Inspection (Exterior): Examine the window from the outside. Look for any obvious signs of damage to the regulator mechanism (through the door panel opening). You might see a broken cable or a dislodged component.
* Visual Inspection (Interior): Carefully remove the interior door panel. This process varies slightly depending on the trim level, but generally involves removing screws around the door handle, armrest, and possibly the speaker grille. Refer to a repair manual or online resources specific to your Geo Metro model for precise instructions. Once the panel is off, you'll have a much clearer view of the window regulator mechanism.
2. Common Problems and Solutions:
* Broken or Dislodged Cable: This is the most frequent cause. If the cable is broken, you'll need a new regulator. If it's just dislodged, you *might* be able to reattach it, but this requires dexterity and patience. You'll have to carefully trace the cable to see where it's detached.
* Broken Regulator: The regulator itself could be broken, usually due to wear and tear or a forceful attempt to raise or lower the window. This almost always means replacing the entire regulator.
* Stripped Gears (Less Likely): While possible, it's less probable if the handle spins freely. Stripped gears usually create resistance and a grinding noise, but not the free-spinning sensation you described.
3. Repair or Replacement:
* Repair (If Possible): If the cable is simply detached, carefully reattach it. This is tricky and may not be possible depending on the extent of the damage. You'll likely need small pliers and potentially some lubrication.
* Replacement (Most Likely): Most likely, you'll need to replace the entire window regulator. This involves:
* Purchasing a new regulator: Get one specifically for your 1994 Geo Metro. Auto parts stores or online retailers will have them.
* Installation: This is more involved and requires patience. You'll need to disconnect the old regulator, carefully remove it, and install the new one, making sure the cable is properly routed and attached. Again, a repair manual will be invaluable. There are usually videos online demonstrating the process for similar vehicles, which can be helpful.
4. Tools You'll Need:
* Screwdrivers (Phillips and flathead)
* Panel removal tools (to avoid scratching the door panel)
* Pliers (possibly needle-nose)
* Possibly a socket wrench (depending on the screw types)
* New window regulator
* Lubricant (optional, for re-attaching a cable, if possible)
Important Note: Working on car doors can be challenging. If you're not comfortable with auto repair, it's best to take your Geo Metro to a qualified mechanic. Replacing a window regulator is generally not a beginner's repair job. A repair manual is highly recommended; you can often find free ones online in PDF format by searching for "[your car year, make, and model] repair manual".
