CV Joint, maybe differential?
 

My Pacifica has started making a clicking/popping noise when it is decelerating, most noticeably on rougher surfaces. If you turn the steering wheel even slightly, the noise gets worse. Anyways, I'm taking it for a drive with my mechanic next week and just wanted to know what my fellow Pacifica owners think.

Keep us posted on what the mechanic says. I wasn't able to find any TSBs to address this concern, but let me know if there's anything I can do to be of assistance.