Excessive Gear Engagement Shock
WARNING: This page is about a different car, the 2002 Mazda 626 and 2001 Mazda 626. However, it is still accessible from the selected car via links, so may be relevant.
Possible cause: burnt clutch, high idle speed, low line pressure, TP sensor malfunction, TFT sensor failure, pressure control solenoid failure, sticking pressure regulator valve or pressure modifier valve, forward clutch slipping, reverse clutch slipping, low and reverse brake slipping and/or loose engine or exhaust mount.