The sport mode light on my 1990 accord is flashing, and the transmission is shifting alil odd. It will hold 2nd to long and at times jolts into gear. It doesn't do this all the time but mostly it does act up. The tranny was also rebuilt about 2 years ago but only has maybe 1000 miles on it tops (the car set for a year and a half) any thoughts?

 

The s light means the transmission computer detected a problem. Use a piece of wire or thin paperclip to get codes.

See this site for instructions:

techautorepairs.com/transmission.html#troubleshooting