the mounts are filled with a fluid so check the greasy if so then the oil in the mount leaked out i had that happen and got it replaced not that bad either to replace. if its a 3.0i its like a 100-120 a mount the 4.4 i dont know but im guessing it would be more.oh also the bolt that holds the mounting braket can come out of the rubber part of the mount or even strip so that could be it too. but try that.