* On the valve cover: This is the most common location. Look for a small, usually plastic valve, often with a hose attached to it. It might be near the back or side of the valve cover, sometimes hidden underneath other components.
* Integrated into the intake manifold: Less common, but possible on some 3.8L engines of that year, the PCV valve might be integrated directly into the intake manifold. This makes it harder to see and access.
To find it, I recommend:
1. Consult your owner's manual: This is the best resource, as it will have a diagram showing the location of all major components, including the PCV valve.
2. Use a repair manual (like a Haynes or Chilton manual): These manuals have detailed diagrams and instructions, often with pictures, that can pinpoint the PCV valve's location.
3. Use an online repair database: Websites like RepairPal or others may offer diagrams and information specific to your vehicle's year, make, and model. Be sure to enter the exact details of your Oldsmobile.
4. Visual inspection: With the engine cool and the hood open, carefully examine the valve covers and the intake manifold. Look for a small, usually black or dark-colored, valve with a hose connected to it. The hose will likely lead to either the intake manifold or the air cleaner assembly. Be cautious when working around a hot engine.
Remember to always disconnect the negative battery terminal before working on any part of your vehicle's electrical system. If you are unsure about performing this repair yourself, consult a qualified mechanic.
