Abnormal Shift
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 or slipping clutch, low line pressure, TP sensor malfunction, VSS malfunction, input/turbine speed sensor malfunction, shift solenoids sticking, faulty control valve body, transaxle range switch malfunction, accelerator cable misadjusted, poor sensor ground, poor body ground, PCM malfunction.