Nissan Repair: Nissan Cefiro 3.0 Brougham, nissan cefiro, exhaust components

Question
I just bought a used, beautiful 2001 Cefiro 3.0 with only 38+K on the odometer. Whenever I start the engine and drive off, there is one loud noise from the auto gearbox. This only happens once, and will only recurr if I switch off the engine and repeat. My foreman has checked the gearbox and found nothing wrong. But the problem remains.  What gives? Is this a serious problem?

Answer
Chee,

Check the motor mounts.  Specifically, the one at the rear is the one that will be making noise.  The motor mount should be electric and filled with ferro fluid.  That allows the mount to be soft at idle, no electrical power applied.  When you shift into gear it gets hard, electricity applied.  I bet when the mount is energized something is popping and causing the noise.  I do not think the noise is in the gear box itself.  Have your foreman get the car on a lift and get someone in the car and do the start thing and then shift into drive and have him watch for movement at the rear of the engine and also for loose exhaust components.  Those are the two most common causes of the noise.  Either metal touching or the exhaust being loose.