My cars been having this problem for a couple years now. Every year about the same time my 2001 V6 mustang
decides to die if I don't drive it for more than 2 days in a row. Initially I thought the battery was just old so I replaced it. Lasted me about 8 months then the car died again. Replaced it again and another 8 months later its giving me problems again so I can assume its not bad batteries. I took it to a shop where the guy first checked all electrical equipment but no problem found. Got an expert to check it out... He said the CPU in the engine was causing a huge energy drain and that it needed to be replaced but only a Ford dealership could do it because it needed to be programmed. I immediately knew this was going to financially destroy me. He said costs would be well over a thousand. Thats just for the replacement part.
I was wondering if I could get someone elses opinion or see if anyone else had this problem before.
They told me I was better off getting a newer car since mines over 100k miles anyways but I just can't afford that right now. Any suggestions?