Hey guys, got a 88Gt I picked up pretty cheap. Something to beat around since I sold my truck. Car is in not bad of shape. One thing I noticed though is when I coast it (can hear it best than) It sounds like a clicking from the diff. Roughly every second? Doesnt sound violent, defiantely not a bearing howl. Any thoughts of what it could be? Trac-loc messed up? Needs a rebuild?