Sounds like exactly what happened to mine. Pedal was mushy on hard stops; it seemed to take forever to come to a stop. Brake light would come on every time I had left the car for a while, then go out after a couple of seconds. If yours is anything like a 1990 V8q, it's pretty easy. Remove 4 bolts, remove, replace. Joel '90 V8q '86 5kcstq