Honda Repair: engine mounts?, flashing sport, accord lx

Question
I have a 91 Accord LX and it vibrates half of the car when its idle, in drive and esp. in reverse.  I think it might be due to a bad or broken engine mount but im not an expert and i just got this car from by bro.  Can you help me? It also has the flashing Sport light problem, but im tying to fix that by buying a replacement part.

Answer
Most of the vibration probably due to a broken front motor mount.  Its the one that is right at the radiator in the middle.  Very common for these to break.  YOu can pull the little side rubber cover away and look at the top of the mount and probably will find its broken.  

I would want to know what the S light code is before you go replacing parts.  Do you know what the code is?