No. 23: Noise Occurs At Idle When Vehicle Is Stopped In D Range, Or In R Position

WARNING: This page is about a different car, the 2004 Mazda RX-8. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Possible Cause - No. 23 Noise Occurs At Idle When Vehicle Is Stopped In D Range, Or In R Position

Courtesy of MAZDA MOTORS CORP.