slow_redcivic

I have a 95 civic ex coupe and when i turn the a/c on the car will randomly either accelerate hard without the pedal moving, or when i push the gas it will slow down and then will accelerate as if i had it wide open but i hardly am pushing the gas. its just seems like it does the oppsite of what i tell it to do haha. i recently changed the a/c belt in it because it was about ready to break. let me know what you guys think.