Both the alternator and the starter aren't terribly expensive. And though they are buried in the engine compartment, they are not horribly hard to change out. It's not too hard to test whether or not the alternator is bad. If the red "Batt" light is on constantly, that is an indication the battery is not being charged by the alternator. If you're not sure, you can always grab a electrical muli-tester and test the output at the alternator itself. Unfortunately I don't know any quick and easy tests for a starter other than to turn the key and see if it cranks smoothly, consistantly and strongly.
Does the check engine light come on? If it does, then the computer has set one or more fault codes, and if you able to scan the computer, that could give you an idea of why the car is behaving as it is. Good luck.
Friday, January 5th, 2007 AT 8:03 PM