Very Harsh Part Throttle 3-2 Shift At 20-40 MPH:

1985 - 1990 Cutlass Ciera/Cruiser, Cutlass Supreme, Eighty Eight, Ninety Eight, And Toronado/Trofeo

A part throttle downshift is a quick apply of the accelerator pedal beyond a medium throttle position (approximately 1/2 of accelerator pedal travel), forcing a downshift.





A harsh part throttle 3-2 shift at 20-40 mph may be caused by a missing or mislocated #2 3-2 control checkball (Figure 1). Remove the valve body to inspect for proper checkball location or damage to the spacer plate. A mislocated checkball may have bent the spacer plate. Also inspect the #12 1-2 servo feed checkball to ensure it is seating properly.