Here's a breakdown of likely causes and solutions:
* Loose or Broken Mounting Bolts/Nuts: While you can't simply tighten a bolt to solve the problem directly, the *root* of the issue might be loose or stripped mounting hardware within the mirror housing itself. This would mean the entire mirror assembly is loose, allowing the wind to push it back. You'll need to:
1. Remove the mirror: This usually involves removing a few screws or clips on the inside of the door panel (behind the mirror).
2. Inspect the mounting: Look carefully at how the mirror attaches to the door. There are likely several bolts or nuts. Are any loose? Are any stripped?
3. Repair or Replace: If loose, retighten securely. If stripped, you'll likely need to replace the bolts or even the entire mounting bracket. If the mounting bracket is broken, that needs replacing too.
* Worn-Out or Broken Adjustment Mechanism: The mechanism that allows you to adjust the mirror's angle might be worn or broken. This allows the mirror to shift more easily under wind pressure. Again, this usually requires removing the mirror to inspect the internals. Repair may involve replacing parts within the mechanism or the entire mirror assembly.
* Damaged Weatherstripping or Seal: Poor seals around the mirror mounting can create a pressure difference that allows wind to push it back. Check the seal carefully and replace it if damaged.
* Improper Installation (if recently replaced): If you recently replaced a mirror, ensure it was installed correctly, following the instructions carefully.
Important Considerations:
* Door Panel Removal: Removing the door panel can be tricky; search for a YouTube video showing how to do this for a 1997 Dodge Ram 1500 specifically. Be careful not to damage any clips or wiring.
* Mirror Type: Is it a manual or power mirror? This will affect how it's removed and repaired.
* Parts: You might need to source replacement bolts, nuts, brackets, or even the entire mirror assembly from a junkyard, auto parts store, or online retailer.
In short, "tightening" is unlikely to be the solution. You need to investigate the entire mounting mechanism to identify the specific point of failure. Start by carefully removing the mirror to get a good look at how it's attached. If you're not comfortable doing this yourself, a mechanic specializing in older vehicles would be a better choice.