I'm gonna bet it's the starter, but generally starters just tend to crap out all at once. So check the batter and the alternator, you'll need that little device thingy that measures ohlms and voltage, and see if they're putting out to their original specs. If so, check your spark plugs for corrosion and wear, then check your spark plug wires for the same.

 

first, go to autozone or somewhere that gives a free check of ur battery and alternator. if its not either of them, it could possibly be your starter.

 

i have that thing to check the alternator and battery, both check out fine, so im pretty much going to cross them off...i recently had my car tuned a few months ago.. but im wondering can the points be wearing out and causing it to have trouble starting?