I searched but search wasn't working for me wouldn't bring up anything.

My Grandpa's got a '90 Civic that I was just driving and had transmission problems barely got home. Basically it popped out of 5th gear a couple times on the freeway. The last time I could put it back in 5th gear but its like the car was still in neutral rpm's could just climb. The exit was right there and I exited. Going home from the freeway there was once I couldn't get the car into 1st gear. Finally got it into 2nd and just started in 2nd. Then when I got home the car won't seem to go into any gear now or seems to be stuck in a high gear no matter where you move the shifter. It has been something you can definitely feel in the shifter now, isn't shifting its regular way, won't go into gears. So think I blew this tranny or my bitch pin is out? Oh yeah car has 250,000 but tranny was rebuilt 80,000 ago with new bearings and things.