Rx7 turns on then dies
 

my rx7 did this for the second time. a little info: voltage meter is down dont know if not working or what, my gas gauge just doesnt work it stops working after half a tank if anything. anyway! The carstarted for a few seconds went up to around 3k then it bogged out. My friend and i put his battery charger on it and then it started. the next day, it started very sowly took longer than usual to start it and then it did the same thing. Not even pressing the gas saved it. help pleaseeeeeeee