M1WA/MPWA – Automatic Transmission Service Group

Acura MPWA - Automatic Transmission Service Group PDF


This manual contains tear down and assembly information and some basic electrical diagnostics for the 1992 to 1994 Acura Vigor with the MPWA transaxle and the 1995 and later Acura 2.5 TL with the Ml WA transaxle. Although these  wo transaxles are very similar, it is the intention of this manual to illustrate the subtle differences between them.

These two transaxles bare a strong resemblance to the Acura Legend with the MPYA transaxle in as much as they all are inline (north-south) mounted and have removable oil pans. The major difference between the MPYA in the Legend and the MPWA/VT1 WA is the MPYA utilizes a reverse clutch while the MPWA/M1WA utilize a reverse selector and forkassembly. These transaxles contain a low hold clutch which provides a manual low gearshift position and have a complete compliment of electronics to control shift timing, TCC control as well as line pressure rise.

INDEX 1991–1998 ACURA M1WA/MPWA 4-speed

  • Overview
  • Identification
  • Clutch Application Chart
  • Solenoid Charts
  • Vigor Computer Schematic
  • 2.5TL Computer Schematic
  • Code Retrieval Procedures
  • Code Charts
  • Mechanical Troubleshooting Charts
  • Oil Pressure Chart
  • Transmission Removal
  • Parts identification
  • Disassembly
  • Valve Body
  • End Cover Accumulator Housing
  • Mainshaft Clearance
  • Countershaft Clearance
  • One-way Clutch Rotation
  • Clutch Drum Assemblies
  • Bearing and Seal Replacement
  • Reverse Idler Gear
  • Parking Brake Roller Rod Adjustment
  • Internal Linkage
  • Reassembly
  • Torque Converter/Flywheel
  • Transmission Installation
  • Cooler Flushing Procedure
  • Cooler Lines
  • Gearshift Selector
  • Gearshift Cable
  • Gearshift Position Indicator
  • Specifications
  • Special Tools
  • Answenmatic Pressure Retention Tools
  • Differential Maintenance
  • Differential Troubleshooting

Language: English
Format: PDF
Pages: 111
Size: 2.85 Mb
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