I have a 91' honda Accord EX, i have notice the that its has been running very
 

high in RPM's as im Driving? While im Driving I notice that it is at 3000 RPM's just at 65mph! I have an Automatic Transmission. The light that turns on in the dash board when i hit the sports gear button on the shifter, is constantly flashing. The sports gear is like a OVERDRIVE button. What is causing my car to run at such a high RPM. I need to know how much it should cost to Fix the problem? Need some help with this problem PLEASE!!!!

is it a stick? if so get you cluch fixed. i had this same problem with my 93 civic.

maybe something problem in the gear box,or in the transmission.maybe it cost about $3000.