My mustang has been sitting in place for about a year, the window was busted and everytime i tried to cover it up the wind blew the plastic / tarp off. (live in oklahoma, very windy.) I tried to jumpstart the car the other day and after it was hooked up and left charging for a bit, i tried to start the mustang. This is what happened: when i turned the key it clicked, and the belt moved a bit, then stopped, then moved a bit, then stopped. Do you think this is a problem with the battery/alternator/starter/something else?