I assume you were trying a jaw puller w/ a screw in the middle. Instead, try a jaw puller w/ a slide hammer on the end to pull it off the crankshaft. removing the bumper and radiator should give the room to allow for the slide hammer. Ack, unless the ac would be in the way.. crap! I didn't think far enough ahead.... If there's room for a slide hammer, Autozone should rent them to you if you've never borrowed tools from there's it can be a life saver! Money down, return tool, money back - simple!
If the jaws on the puller you're looking for are too small and big then my idea doesn't work since no puller will grab the balancer but I'm decently sure Autozone should have what you need...