I don't really know anything about cars but I have an automatic honda civic dx that takes a while to shift into the next gear. Im not too sure but I think that it might need a new transmission. It also won't shift into d2. I have gotten a few suggestions such as flushing out the transmission and replacing the gaskets. If anyone knows what it might be please reply as soon as possible. Thank you.

Add one bottle of Lucas trans repair. It really works.

Link Lucas Oil

It is available at Auto Zone, Meijer, and I think pep Boys and many other locations. The best 10.00 you will ever spend.