Ok on saturday I come outside and my car has a flat. So I just take my moms car to work. Next day Im about to go get the flat fixed, and the car will not turn over. I put the key in, turn it, and it just makes a repeated click from somewhere near the firewall (i think) and does nothing. I can hear the fuel pump whir, and all the lights and the CD player work fine. Is it a bad starter?