Installed a used but good Honda Accord trans, Now its not working?

Installed a used but good Honda Accord trans, Now its not working?

Year for the accord and how long the "used transmission" was working "good"? Now, what's not working? More into details of the problem would be nice.

Worked out of a totaled car great. Installed in mine and its like it doesn't have enough line pressure. It has the correct honda
fluid and amount

Depends on whether it's electronic or throttle cable controlled. Since you didn't think it was important to list year, model, and engine, there's no way we can help