The first question I have is are the starters for an 1986 FJ60 & 1989 FJ62 the same. If so what would cause the engine to cut out between 600rpm & 1500rpm. When I changed from the 1986 starter which was bad to the 1989 I instantly had this problem. I also noticed that when the negetive battery cable is disconnected I still have the door buzzer that works which I know isn't right. Could I have and ignition system grounding issue? Any help will be greatly appreciated. Also above 1500rpm's the truck works fine at 600rpms it will idle. I figured I would add a little more of the symtoms. The truck will idle but it is a rolling type idle. Like it gets above a certain RPM then cuts out until the RPM's go back below another.