This mourning I went out to my car and i started it up and I heard this beating sound when I looked the weight on my crank we spinning loose. It wasn't on the key hope or anything. Has anyone had this problem before.
This is a common problem to the 94\95 Mustangs. Don't drive the car till you get the ballencer replaced. A replacement harmonic balencer is around $80.00. Better yet get a aftermarket one, pricer, but will not have to worry about it comming apart again.