Honda D Series Forum banner

99 civic ex

  1. Tranny conversion complete. 10 mins shitty idle.

    Transmission alley
    Hello all, and thanks. Last weekend I did a auto to manual swap on my 99 civic ex. The tranny was from a 98 civic ex. Anyways, everything works fine, however for about the first 10 mins, the car idles from 1500-2000 up and down every few seconds or so. I plan on doing this for the fix: Any tips?