What would be wrong if when you shut off the engine of your 1992 Grand Marquis and your windows and windshield wipers still work What could this be?
Can you still turn the radio on and other accessories? If so then I would say that the ignition switch is bad. It is not properly stopping the current anymore. Hope this helps.
Your wipers on your Saturn will not shut off when engine is running but when you turn car off and turn key in the on with not starting you can turn on and off your wipers?
I had the same problem with my 92 Grand Marquis. Seems that the windshield wiper motor was running in the opposite direction for one reason or another. You may need to replace the motor or have someone look at it. Fortunately for me, my mechanic drilled a hold on the motor and flipped around, now my windshield wipers stay down when not being used, however they stay up when in use... weird.
form_title=Car Windshield Wiper Repair form_header=Improve your visibility during inclement weather with new windshield wipers. If yes, do they leave streaks on your windshield?= Do your windshield wipers turn on?= () Yes () No () Sometimes How long have you had the current wipers?=  Less than 6 months  6-8 months  8-10 months  10-12 months  Longer than 12 months Would you like new windshield wipers?= () Yes () No () Not Sure