I am having a shifting problem with my mustang. A while ago my engine light went off and it disappeared in 2 days before i could get some one to check it. My car started to shift into 2nd gear in less time than it use to. And couple of days ago it started the opposite. It will take some good time to shift from 1st to 2nd gear. But rest seems to be fine. Also if i accelerate steadily, it works fine and shift normal in
2nd -5th but if i accelerate fast, it would just increase the RPM and won't accelerate.-When its shifting.. its smooth doesn't look like its forcing into the next shift. -The Engine light is gone now. -I had an error in oxygen sensor a while ago which was something like delay in communicating with port A or C or something like that when I hooked up the code reader from my friend.
Any one knows what can be the problem. Is it a bad sensor or bad transmission??