check the pcv valve & air filter and spray some carb cleaner on the throttle body then wipe the dirt off it..., and put some fuel inj cleaner in the gas tank.......don't soak it down unless the car's running and you open the throttle while you're spraying ( you don't want to foul the plugs ) if that still doesn't help another honda problem is egr passages being restricted with carbon and crap, clean the egr valve when you take it off to get to the ports. motor mounts is another possibility but the fact that the idle jumped up makes me lean toward the idle air control valve/intake/fuel system being dirty.