1997 Honda Accord • 4 cylinder FWD Automatic • 360,000 miles

I have a 97 Honda accord and I have replaced the transmission a few times but not the solenoids and the car drives fine and then all of a sudden out of nowhere it will not go into any gear not even park and when I try to change gears the gears sound like they're grinding. I check the transmission fluid and Theres plenty in there. What could be causing this? Sometimes when we manually shift it by removing the linkage cable it shiftss then I try to drive it, it works for a while then same thing happens
January 6, 2014.

Something seems to be loose internally and further testings would be required.

Jan 9, 2014.