I have a Saturn ion 2006, I just got a brand new starter one year ago, also had the ignition replaced, the same day. I had the battery tested and it's good, but when I go to start my car it hesitates

starters can go bad frequently depending on were u live how often you start and stop your engine and how long you hold the key down after the vehicle has actually engaged. the starter spins your engine at 25-45 rpm enough to get the cylinders moving once it starts your car idles at 1100 to 1700 rpm if the starter is engaged that's like pushing a car down a hill then the driver hits the gas and your stuck running behind up until the point you take flight and get dragged across the pavement

but to be honest we need more info . yr make model engine size. we need info such as cranks endless but wont start turn the key and it cranks supper slow or turn key and get a click click click crank all of these have different issues the clicking is either a sign of a weak battery- to much resistance in wire from battery to starter -- or bad magnetic solenoid in the starter(or starter relay bad) like johnny 5 says need input more input