My explorer makes a clunking or clanking noise when i ease off the gas and coasting or slowing down. I went underneath and shook the drive shaft and notice that the sound was coming from the rear of the transmission, possible where the drive shaft meets transmission. Is there a bearing there or a pinion of sort, when i shake the shaft i hear the sound like there is some play in the transmission. I can't figure out if its the transmission mounts or something else.