The fuel filter, however, is in-line and usually found near the fuel tank, somewhere along the fuel line that runs from the tank to the engine. It's often underneath the vehicle, close to the rear axle but the exact location can vary slightly. You'll need to look underneath the car to find it. It's usually a cylindrical canister with fuel lines attached.
Because its location isn't standardized, a repair manual specific to a 1991 Chrysler New Yorker with the 3.3L engine will be the most reliable source to pinpoint the precise location of the filter. A Chilton's or Haynes repair manual would be helpful.