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Q: Grand Marquis wont shut off on 1990 Mercury Grand Marquis

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
Tried disconnecting battery & it still wouldn't shut off
No car image 94a1663db56199c5353592009e34aaa51078a2469bed068bb8d6f0ba43accf97
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Most likely the ignition switch or actuator system is defective. Possible ignition primary circuit shorted to battery voltage. The alternator keeps the engine running with the battery unhooked! To stop the engine you can unplug the ignition coil connector, then unhook battery to keep it from being discharged until repaired. You can also just pull the coil wire (from the dist cap not the coil) but be careful, it still bites if not done correctly! It might make you mad but it wont hurt you!! Lot of volts but near 0 amps.
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