I Just had a brand new Clutch put in my 04 civic ex about one month ago. Everything was fine until today I started it up and it wouldn't shift into 1st, 2nd, 5th and Reverse. It would only go into 3rd and 4th gear.
After it warmed up, it started shifting into all the gears but it was very hard to get in. And a few minutes after that it was perfectly fine like nothing was wrong.
My buddy told me to check the trans fluid and the selectors.
Anybody have this problem or know what to do?

 

What kind of clutch?
What kind of fluid?