Three problems related to engine and engine cooling have been reported for the 1999 Ford Mustang. The most recently reported issues are listed below.
Spark plug blew out of an already fixed head!!!.
Car lunges in drive or reverse before accelerator is deployed.
Slowing down for a stop sign when the 3 rd spark plug blew out on the passenger side of my 1999 Mustang gt with a 4. 6 v8 . It also destroyed the coil on top of the plug.