Metricman,

Thnx for the tips, I will try it ASAP......

To Davis,
The noise is from interior for sure, just not sure where yet.....it only happens on rough roads, and it feels like the door latch is not fit properly and/or the whole body is tweasting, and cause the door the move a bit..

Thnx for the feedbacks...
Happy Motoring....
Andy Kuo
'92 400SE