On a 1999 Dodge Dakota with the 3.9L engine, the EGR valve is typically located on the intake manifold,
towards the rear of the engine. It's often near the firewall and can be somewhat difficult to access. You'll likely need a wrench and possibly some patience to get to it. Because of its location, it’s usually easier to see and access it from underneath the vehicle.
However, a picture is worth a thousand words. I strongly recommend searching online for "1999 Dodge Dakota 3.9L EGR valve location" using Google Images or a similar image search engine. You'll find numerous photos showing its precise location on that specific engine. This visual confirmation will be far more helpful than a general description.
