Rep Power: 0

Hey all, I just changed the gauge cluster light bulbs with LEDs and I accidentally started my 2001 Honda civic LX without the gauge cluster installed. Ever since this has happened my car is idling very hard and when I have the speed gauge cluster plugged in now my speedometer wont go up? The entire gauge cluster was working ,but the lights were dead which is why I unplugged the cluster in the first place. The RPM's are working and there is no engine light. If anybody has an idea where to start please help I've taken 2 days off of work to fix this because I cant afford to go to a mechanic. (note: My front motor mount is bad I will be replacing this tomorrow)

 
Rep Power: 224

Check the number 4 (10 amp) fuse in the under-dash fuse box. That fuse is for the speed sensor, maybe something you did caused it to blow.

Have you done any other work recently? Specifically to the alternator.