I just put in a new battery, alternator & starter on my car & it'll run fine, & start fine for a couple weeks & i'll staI rt it drive it somewhere be there for a couple hrs & get back in & it doesn't strart. My stereo, lights, & everything on my dashboard turns on just not my car. I have absolutely no clue what the problem could be.
What is the symptom when it doesn't start? Does the starter crank the engine? What noises do you hear when the problem is occurring? What happens to the brightness of the head lights or dome lights when you try to start it?