2001 Honda Accord My car won't reverse and engine making wi

Automatic transmissions are quite complicated and for the average DIYer, about the only thing you can do is check the automatic transmission fluid level and ensure it is full. You may also have the capability of changing the fluid and sometimes this will "fix" a problem (more like delay the inevitable).

If fluid level is normal, be prepared for not so good news, as in: you will need a new/rebuilt/junkyard transmission. I would suggest that if this is the diagnosis, you shop around for a reputable place to ensure you are getting fair, honest pricing and quality work. Good luck!