my 05 chevy cobolt wont turn over. i have replaced the battery, coil pack, boots and plugs.
after I had got my car started I went to auto zone and got it hooked up to the computer it told me that it was misfiring, running lean, and a o2 problem. so I replaced the coil pack and the boots and it ran fine for a day and now I cant get it started again. please help me out on what the problem is on why it wont crank over