I have a 92 civic hatchback with a b16a2 stock motor. When I'm in first and second gear around 7,000 RPM and up the car slows down and takes off(jerking feeling over and over) constantly until I shift into second gear. When I'm in second gear it has the same problem. What is going wrong? Third, fourth, and fifth gear is fine. I recently change my alternator if it helps.

 

the slows down and taking off sounds like ur misfiring but that would be happening in every gear most likely.... check ur plugs and ur distributor cap anyway. if not it could be ur trans