Well i was under the hood today and noticed that the pipe that you fill the a/c under the hood was loose side to sidealso noticed that the pipe has a rubber hose on it to stop it from hitting the strut tower. Then i noticed that there is a clip or somthing at the split in the pipe about half way down the pipe. I pushed the pipe to the sideand let the rubber hose banginto thestrut tower.Noticed that a clip was hitting the strut tower. I notice that the clip spins on the pipe it is a weired shape and very looseand could come it contact with the strut tower, sounded like a cluncking noise from under the hood. Mabe this is the cluncking noise we are hearing. Ispuntheclipfor the widest gap to strut towerand went for a short ride, No Bumpsbut didn't hear the cluncking noise. I will let you know how it turns out.