Car still running after take key out . cheked barrel thats ok don't know if it's relay problem

You need a new ignition lock cylinder

I think you have a bad ignition switch, not the ignition lock cylinder. they are 2 different things.

Section 11-05: Steering Column Switches 1996 Taurus, Sable Workshop Manual
REMOVAL AND INSTALLATION Ignition Switch Removal

1. Disconnect battery ground cable (14301).
   

1. Remove lower instrument panel steering column cover (04459).
   

1. Rotate ignition switch lock cylinder (11582) to the RUN position.
   

1. Disconnect the ignition switch electrical connector.
   

1. Remove the two screws retaining ignition switch (11572).
   

1. Disengage the ignition switch from the actuator.
   

1. NOTE: A new replacement ignition switch assembly will be set in the RUN position as received.
   
   Adjust the ignition switch by sliding the carrier to the ignition switch RUN position.
   

1. Make sure that the ignition switch lock cylinder is in the RUN position. The RUN position is achieved by rotating the ignition switch lock cylinder approximately 90 degrees from the LOCK position.
   

1. Install the ignition switch pin into the actuator. It may be necessary to move the ignition switch slightly back and forth to align the ignition switch mounting holes with the lock cylinder housing threaded holes.
   

1. Install retaining screws. Tighten to 5.6-7.9 Nm (50-69 lb-in).
   

1. Connect electrical connector to ignition switch.
   

1. Connect battery ground cable. Check ignition switch for proper function, including START and ACC positions. Also, make certain that the column is in the LOCK position.
   

1. Install lower instrument panel steering column cover with screws.