I have an XT1053 Dev Edition and it has a very noisy vibrate function. I've read that this is common on these phones, but I haven't found any solutions yet. I just had my phone apart when replacing the rear facing camera and the battery cover (success on the camera fix!), and I had a chance to check out the vibrator motor. The shaft of the motor has a lot of vertical play, enough that I could move it in and out with my screw driver, and it would make a click sound as it hit a stop on either end of the motion. There didn't seem to be any side-to-side play so I don't think the motor is going bad. I believe it's just this vertical play that causes all the noise. This is really annoying because my friends cheapo LG has a nice quiet, rubbery feeling vibrate, where my Moto X sounds like a kids noisemaker out of a 25 cent gumball machine.
Has anyone found a solution for this? I've tweaked the vibrate intensity for certain functions, which helps for tactile feedback. But it still sounds bad, and on silent I can't turn the vibrate intensity down or else I won't feel it. I'd go as far as replacing the vibrate motor if it would silence the rattle. Although I haven't seen anywhere at all to even think about purchasing a new vibrate motor. I though maybe a dab of silicone where the shaft enters the housing? Also, did these phones do this out of the box when brand new? I got mine second hand so I don't know how loud/quiet it's supposed to be.
Has anyone found a solution for this? I've tweaked the vibrate intensity for certain functions, which helps for tactile feedback. But it still sounds bad, and on silent I can't turn the vibrate intensity down or else I won't feel it. I'd go as far as replacing the vibrate motor if it would silence the rattle. Although I haven't seen anywhere at all to even think about purchasing a new vibrate motor. I though maybe a dab of silicone where the shaft enters the housing? Also, did these phones do this out of the box when brand new? I got mine second hand so I don't know how loud/quiet it's supposed to be.
. I personally would examine the motor at play(watch it work an locate problem. An is the weight head moving in an out of the motor(horizontally) or up an down(vertically)? The latter would be a cause of this issue. The horizontal play is perfectly normal for a electric motor, they require some play there other wise the motor would seize an stick eventually (a lot quicker then with the play) 
