Hey guys this is my first post so here it goes:
I have a 1994 camaro with the 3.4 v6 and an auto. Every once in a while at a stoplight the engine starts vibrating pretty badly. The engine seems to idle around 800 rpms. Could my idle be to low or is there some major problem.

 

800 seems a lil low, i think it could be a motor mount busted if the engine is moving

 

I changed the motor and transmission mounts but it still vibrated. I'll try bumping up the idle.

 

my 96 idles pretty rough but if i put a higher octane it is much smoother. u might try that. or maybe even a can of seafoam deepcreep