I have a 2005 Nissan pathfinder with only 46k miles. I had my radio going on acel mode for 30 min, which killed the battery...Very odd, but i had it jumped and the car started. Since then my car's aceleration is horrible. It sounds like it's stuck in high gear. From 0-20 it's takes like 5 seconds. I brought my car to a automatic transmission shop and he replaced the TCM but after doing so the car is still doing it. He is stumped on the problem. It's been 2 months, how do I get this problem fixed? Am I in limp mode? Or is it another problem? Any suggestions?