car stalling

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every few weeks my car will start to act up. the check engine light will pop up and my car will jerk whenever i turn on anything while driving. it will also stall on me while i am idling and driving. when the car stalls everything in the car is dead and i will need a jump. also when the car isn't started, and dead, i will hear a tick tick sound and can only jump the car if the brake pedal is pushed down. also when i go to start my car the clock and radio will be reset as if the battery was disconnected.