you really need to go to auto zone or some place like that and let them check it. be sure they know what they're talking about though. if you have a volt meter, then hook it up and see that your starting volts is, should be 13 volts, if its not you need to charge your bat. then when you start your car, you watch the meter, and see how far the starter pulls the bat. down. to 9 volts is ok, after that you have a problem. the bat. has to be fully charged before you do this. if your bat. is not fully charged you need to find out why. use the same meter to check your alt. out put.