One problem related to starter has been reported for the 1998 Ford Mustang. The most recently reported issues are listed below.
On startup, most often but not limited to after sitting overnight, engine produces a 'clicking' or 'racheting' noise. When ignition is turned to off, starter grinds and makes horrible noise as if 'starting a car that is already running'. . . In order to turn engine off first I must crank key to start position, where starter then grinds and whirs because engine is running, then back to off position before engine will kill. I have never driven car when car starts up with 'clicking/racheting' noise. . . I always turn it off and restart it. Problem occurred after 1 month of ownership and is seemingly random?. . . # of occurances is approx. 10-15 times over 3 years. . . 2 different dealerships could not locate cause or reproduce problem. . . Strange.