1. Open the hood of your Dakota.
2. Locate the valve cover on top of the engine. It's usually a black or silver cover with the word "VALVE" or "COVER" stamped on it.
3. Look for a small hose connected to the valve cover. This is the PCV hose, and the PCV valve is located at the other end of it.
4. The PCV valve is usually a small, cylindrical-shaped component with two ports. One port is for the hose connecting to the valve cover, and the other port is open to the atmosphere.
It's worth noting that the exact location of the PCV valve may vary depending on the specific engine variant in your 2004 Dakota FWD. If you have difficulty finding it, you may want to refer to your vehicle's owner's manual or consult with a qualified mechanic.