BJ60 1984 My wagon starts fine, but it's developed a problem of not shutting off - pull the key out, all electrical is off and all I can do is stall it to stop it, OR pop the hood and pull this manual lever to off. It's at the end of a small piston like thing, right-rear of the engine, just below the injectors. Can you tell I am not a gear head? Local mechanic says it "must be the starter" but I am skeptical. Any thots?