I had parked my car for about a week and when I went out to drive it, the car was dead. I put my battery charger on it and as soon as I turned on the charger, the engine started turning over. I disconnected the terminals and charged the battery. When I connected the terminal, the engine turned over until I disconnected the battery. I switched the ignition on and connected the battery and it started up but the bendix would not disengage. Do I have a bad solenoid or is my starter on the way out?