My cousins car won't start. I replace the alternator the other day and two days later the car wouldn't start. The battery was near dead when it was taken in to get tested but charged and they said it was good. Took the starter off and the battery and both were tested and came back "good." The number 2 plug was broke so I replaced the plugs and coils. Any guesses what may be keeping the car from starting? Hot short somewhere? Bad ground? I am at a loss right now.