Where is the fuel pressure regulator on a 1993 Chrysler new yorker?

On a 1993 Chrysler New Yorker, the fuel pressure regulator is integrated into the fuel rail. It's not a separate component like on some older vehicles. You'll find it on the fuel rail itself, usually near the end opposite the fuel filter. You'll likely need to remove some components to clearly see it. A repair manual specific to your vehicle's year and engine will provide detailed diagrams and instructions.