So, i have a 2.7 intrepid and it is currently not running. here are the problems. 1. the oil light comes on and off and my oil is fine 2. the battery wont stay charged 3. it revs on its own when its humid outside (its possessed.) 4. When i brake and my car is shifting down it feels like someone hit me (no problems shifting up) 5. if i start the car and the airbag light is on, my windows and my air conditioning wont work. I know that i should sell it but before i do i need to get all of these problems fixed, ive been driving a beater 89 suburban and im absolutely sick of it. PLEASE HELP ME!