96'
Does the rpm's drop off when you are driving and let off the accelerator?
if it does look into replacing the fuel filter. they are pieces of crap i have to change mine very offten to keep them flowing good. better gas will help also.
my car has the same problem. i also put a couple of cans of bg 44k in it and it made it run a lot better, took a lot of the rattling out of it!
help it helps