theft light

Hello everyone, This is my first post as I'm just joining and I searched but didn't find the specific problem I'm having. I recently brought my late brother in law's 1995 Cobra home. It has sat for 13= years and hasn't been touched. It had a bad fuel pump and the tank was trashed so I replaced...

I have a 2003 Ford mustang with a 3.8L V6. The theft light stays on constantly, while either the car is off and the key is out, or running. I've tried the method of looking for codes in the dash. I get the image "dt3842" and then one more push of the odometer button it reads "dtc NONE". I also...