If you were leading(which you're not in this case) I would bet it fairly strong, if another ace is not there, you are likely to take the pot right there. A $2 bet doesn't say much, depends what stakes you are playing with and whats in the pot to say whether that is a strong bet or not. If its a small bet based on the pot size and game, it could be 2nd or 3rd pair testing the water to see if an ace is out there. You don't want to get in too deep with a small kicker, play is either to call if its cheap or come over the top and test the others, J or 8 pair likely folds, any A likely beats you because of your tiny kicker, so play back to your raise should mean a lay down for you.