trans problem or electric
 

Hello! :) i really need help SOS i have a 1998 civic lx 1.6 single cam automatic and the car runs and shifts perfect for about 30 or 40mins then it feels like it goes into neutral and has no gears but if i shut the car off even just for a second and start it back up it will shift fine again but only for another 10 or 15mins then it will do the same thing can anybody help me with this????