Help! It won't start

[gavinsmith]

The door to my '99 XLT 5.0 AWD was left open in the garage all night, and without surprise it wouldn't start the next morning. I tried to jump it, first with my 4 cyl Honda Accord, then with my V8 TownCar. That didn't work, and I tried to charge the battery, without success. I replaced the original battery, figuring it had a dead cell. The X now cranks very hard, but will not turn over. It isn't the inertia switch, and I can't believe the fuses are the problem. What do I need to do?

 

[Blee1099]

Welcome to the site.. By chance is the theft light flashing when you are cranking the motor over.

 

[gavinsmith]

Yes, it's flashing. What does that mean?

 

[MONMIX]

flashing is good.

Run a fuse check.