To locate it, you'll need to:
1. Consult a repair manual: A Chilton's or Haynes repair manual specific to your 1989 Dodge Dynasty will show the exact location with diagrams. This is the most reliable method.
2. Look under the car: Carefully inspect the fuel lines running from the fuel tank towards the engine. The filter is usually a cylindrical canister-shaped component in the line, often secured with clips or clamps. It might be near the rear axle or closer to the engine, depending on the model.
3. Be aware of fuel: Work in a well-ventilated area and avoid sparks or open flames. Fuel is flammable and dangerous.
Caution: Replacing a fuel filter requires some mechanical skill and understanding of fuel system safety. If you're not comfortable working under your car and with fuel lines, it's best to have a qualified mechanic perform the replacement.