Do not attempt to tighten the belt by hand or by simply turning the tensioner pulley. You risk serious injury and damage to the tensioner or other components.
Here's what you should do:
1. Identify the tensioner: Locate the tensioner pulley. It's usually a pulley with a pivoting arm and will have either a bolt head (for a tool) or a convenient location for leverage (occasionally). Consult your car's repair manual (a Haynes or Chilton manual is a good investment) for a diagram.
2. Use the correct tool: The best approach is to use the correct tensioner tool for your specific year and model. Auto parts stores may have them available for rent or purchase. This tool provides leverage to correctly release the tension.
3. Improvised method (use with extreme caution): If you don't have the right tool, you might be able to use a sturdy breaker bar or long wrench *carefully* on the tensioner pulley's bolt head (if it has one). This is risky as you could easily damage the tensioner or slip and injure yourself. Only attempt this if you are mechanically inclined and understand the risks. Always use safety glasses.
4. Release tension: Use the tool (or breaker bar if you're using the risky method) to gently push or pull the tensioner pulley away from the belt. The belt will become loose enough to remove or replace.
5. Replace or adjust: If replacing the belt, route the new belt in the correct path following the diagram in your repair manual. If just adjusting (due to slippage), ensure the belt is correctly routed before releasing the tensioner.
6. Release the tensioner: Slowly release the tensioner tool or breaker bar. The tensioner will automatically re-engage, tightening the belt to the correct tension.
Important Considerations:
* Repair Manual: The most crucial step is having a repair manual specific to your 1995 Oldsmobile with the 3800 engine. It will have diagrams and detailed instructions.
* Safety: Wear safety glasses to protect your eyes from flying debris.
* Tensioner Condition: Inspect the tensioner pulley for wear and tear. If it appears damaged or worn, it should be replaced.
* Belt Condition: Inspect the belt for cracks, fraying, or glazing. If it's damaged, replace it.
If you're uncomfortable performing this repair yourself, take your car to a qualified mechanic. A seemingly simple job can quickly become complicated if done improperly.
