Hi, I have a 2003 Mitsubishi Eclipse GTS with a 3.0 V6 and a standard transmission with almost 106,000 miles on it. Pardon me for the long post, but I think all of these details are important Recently, my car started doing some really weird stuff. Sometimes when I went to turn on the heater, the whole car would just shut off. Whenever I was coming to a stop and put my car into neutral, the car would either just completely Stall or the RPMs would drop down really low, anywhere from 100-400. Sometimes when driving, the car would shut off for a split second and violently jolt backwards but spring back to life after that split second, sometimes this jolt happened multiple times in succession. After all that I‘d had enough, I took it to Autozone to test the battery and alternator, the guy said part of the alternator went bad (can’t remember what it was called) which I kinda figured since the battery is only 7 months old. I bought a remanufactured alternator and installed it, but all of these same issues I was having before didn’t go away. Come that same night after I had Test driven the car, I was sitting there with it idling for a few minutes with the hood popped, then I smelt something weird so I got out and saw that my positive battery terminal was on fire, or at least the nut was that holds on the cables. Being still kinda new to cars and how they work, I didn’t know that batteries need to be held in place by something. There is nothing holding the battery down and I’ve been driving the car like that for thousands of miles, I don’t know if that’s something that can destroy a battery or cables or not. The terminal and cable look intact, the Fire didn’t cause any major damage. I was also not the one who installed the battery, it was the last guy who owned it.