Nissan Repair: 1997 Maxima Strange Noise, speed wheel, excessive movement

Question
Von, appreciate your take on this issue, my 97 Maxima makes a strange vibration/buzzing type noise during warm up.
This noise is best heard in the driver seat with doors closed and does not vary with engine speed, wheel turn, or accessory load. This noise vanishes when the engine reaching normal operating temperature. Any ideas???
No drive-ability issues at all !!! Very strange indeed.

Answer
Carl,

Is the noise inside the car or outside?  If the noise is outside it could be a defective motor mount allowing metal to touch.  I am trying to remember if the 97 has electric motor mounts?  If it does you could have a problem with them leaking and then at idle, cold, it could allow excessive movement, until warm.  Email me back and let me know if the noise sounds like it is under the hood or inside the car and we'll narrow it down.