2002 mustang runs great and then won't start

[rhonda]

I have a 2002 Mustang. It runs great for about a week and then after sitting over night, it will not start. I try to start it for a couple days with no luck and then the following day it fires right up and runs like a top. Any ideas? This all started back in December after not being started for a couple months.

[upton7]

check for battery terminal corrosion or a bad connection