well i had my alternator tested again, and it is an intermittent problem. But the guy said it is and isn't a big problem. After testing it for a day he said that when i hit a bump, or in hard exceleration or breaking the alternator fails, the volts is between 6 and 8, then after a couple of seconds it goes back to normal at 14 volts. And since i have a good battery it isn't a big problem when the alternator fails. So the guy said i should wait till the lights come on and stay on or till i feel like it acting funny to change it.