1999 Dodge Intrepid

Hello.I have a 99 intrepid with the 2.7 in it. I have been having problems with the car kerking and pulling forward while driving the car on the highway above 50 mph. When it starts acting up the engine light comes on. After driving for awhile the light eventually goes out until the next time this happens. I have scanned the computer for the codes and found the cam shaft position sensor was out.I replaced it but the problem is still there. The check engine light doesnt stay on long enough to scan it while its on. I have also had the transmission rebuilt 6 months ago after being told this was the problem. Do I need another tranny $$$$ or is there something else that could be causing this problem.