98 Honda Accord Front End Popping

1998 Honda Accord LX 89K miles. While driving down the road, when I am coasting, there is a popping sound coming from the front end. It doesn't make the sound when I am speeding up or maintaining speed or when the brakes are applied, only when coasting. I checked the tires to see if I had a broken belt in the tire but they look fine, also, it doesn't liike like anything is hitting the tire. I few months ago, I had both fron axles replaced as well. What do you guys think.