For 1990-2009 cars

# Info - Oil Pump Drive Shaft Assembly Inspection

Subject: | Oil Pump Drive Shaft Assembly Inspection

Models: | 1999-2001 Chevrolet Cavalier, Malibu

| 1999 Oldsmobile Cutlass

| 1999-2001 Oldsmobile Alero

| 1999-2001 Pontiac Grand Am, Sunfire

| 1999-2001 Toyota Cavalier

| with 4T40-E/4T45-E Transaxle (RPO MN4)

Before reassembling the oil pump drive shaft assembly, be sure to inspect the spacer. The oil pump drive shaft spacer (the spacer is pressed onto the shaft and is part of the shaft assembly) could be loose, missing, or broken. Broken spacers have been known to cause damage to the oil pump shaft, the turbine shaft, the channel plate, the control valve body and the torque converter. This damage results in metal debris throughout the transaxle. The control valve body must be thoroughly cleaned or replaced. The same applies to the clutches and the pressure switch assembly.

If the oil pump drive shaft spacer is found to be damaged, inspect the oil pump shaft, the turbine shaft, the channel plate, the control valve body and the torque converter. All seals, gaskets, fiber clutches and the converter must be replaced. All parts must be cleaned and the control valve body will need disassembling and cleaning or replacement as well. The transaxle cooler and lines also must be flushed.