ok here is my problem. My 95 GT has been sitting for about a month or so, I go to start and it has a dead battery, no prob. I jump it and it starts right up. It idles for about 5-10 munutes then starts reving up and down and dies. I go to fire it back up and all my gauges are crazy, and it won't do anything. I also noticed the check engine and the light beside it are on really dim when the key is off and out. Any ideas??????Please help.....