I bought a brand new battery, also i tried the hole reset the keys by hitting the lock or unlock button twice then turing by 30 seconds nothing. It was deff the o2 sensor just had it checked. I had a problem a couple months ago with the cam sensor and changed it. When that happened though the car would not start at all. I just put in a new fuel filter and fuel pump because my car is nickel and diming me but i hear it priming. I would be very PLEASED if some one can help me with this thank u!!