1990 Accord all forward gears work fine but Reverse makes a clicking noise and the car will not move in reverse.

Automatic or manual ?

Have the brake system checked. Drum brakes do this. Transmissions don't.

sounds like you have a busted drive shaft or a bust spigot shaft going into your gear box. Easiest way to check on this is to jack up the front of the vehicle and spin the wheels. If the drive shafts move then they are fine and you have a busted spigot shaft. The only way to replace this shaft is to drop the gear box and replace it.

probly not. hate to say it but if its grinding then u need a new trans

Change your fluid and filter and see if that helps,and put a can of lucas in it

left and push the shifter into the floor like stabbing down ten it will go left a little more and push forward and you will be on your way in good ol R

i think those trannys are built like a manual on gear shafts rather than a planetary system. I would suspect the spur gear ...

It is hard to say, but as long as all of the forward gears work fine, then it might work for a long time. But without knowing what is wrong, I would at least change the fluid to remove as much metal or clutch material as you can. Don't worry about the filter, you can't change it without disassembling the trans. Just drain the fluid and refill it. This won't fix reverse, but it might prolong further problems. And don't park where you can't pull straight out.

I have a 2000 Honda Accord EX, it shifts normal on forward with no problem. Also when the car is cold the reverse gear works just fine, but when the car runs for about few minutes the reverse gear will not work. It will seem as if it wants to go but then if feels like its neutral.

sounds like a cotter pin has broken and needs to be replaced.