This workshop service repair manual focuses on the F4A20 Series automatic transmissions, specifically the F4A21, F4A22, and F4A23 models. These transmissions were integral to a variety of Mitsubishi vehicles, including the Colt, Colt Vista, Eclipse FWD, Expo FWD, Galant FWD, Mirage, Summit FWD, Summit Wagon 2WD, and the Sigma, across production years from 1990 to 1994. The F4A20 Series transmissions are 4-speed automatic units featuring torque converter technology and were engineered to be compatible with a range of engine displacements from 1.6L to 2.4L, including turbocharged variants. Their widespread application underscores their reliability and adaptability in performance and everyday vehicles of their era.
This manual provides comprehensive guidance for the overhaul and repair of the F4A20 Series automatic transmissions. It details essential maintenance procedures, troubleshooting common issues, and offers in-depth technical specifications necessary for accurate diagnostics and repairs. The content is designed to assist owners, mechanics, and technicians in effectively maintaining and restoring the functionality of these transmissions, ensuring optimal performance and longevity. By following the outlined procedures and information, users can confidently address a wide spectrum of repair and service needs for the specified vehicle applications.
MITSUBUSHI AUTOMATIC TRANSMISSION GEARBOX OVERHAUL WORKSHOP SHOP SERVICE REPAIR MANUAL F4A21 F4A22 F4A23
AUTOMATIC TRANSMISSIONS
Mitsubishi F4A20 Series
Colt 4-Speed (1990-92) ..................... F4A21 & F4A22
Colt Vista 2WD (1990-94)
1.8L & 2.0L ...................................... F4A22
2.0L Turbo ....................................... F4A23
Eclipse FWD (1990-94)
1.8L & 2.0L ...................................... F4A22
2.0L Turbo ....................................... F4A23
Expo FWD (1992-94)
1.8L ............................................. F4A22
2.4L ............................................. F4A23
Galant FWD
DOHC (1990-93) ................................... F4A22
SOHC
(1990-93) (1) ................................... F4A22
(1994) .......................................... F4A23
Laser Non-Turbo (1991-94) .......................... F4A22
Mirage
1.6L (1990-92) ................................... F4A21
1.8L (1993-94) ................................... F4A22
Summit FWD ................................. F4A21 & F4A22
Sigma (1990) ....................................... F4A23
Summit Wagon 2WD (1990-94)
1.8L & 2.0L ...................................... F4A22
2.0L Turbo ....................................... F4A23
Talon Non-Turbo (1991-94) .......................... F4A22
MITSUBUSHI AUTOMATIC TRANSMISSION GEARBOX OVERHAUL WORKSHOP SHOP SERVICE REPAIR MANUAL F4A21 F4A22 F4A23
AUTOMATIC TRANSMISSIONS
Mitsubishi F4A20 Series
Colt 4-Speed (1990-92) ..................... F4A21 & F4A22
Colt Vista 2WD (1990-94)
1.8L & 2.0L ...................................... F4A22
2.0L Turbo ....................................... F4A23
Eclipse FWD (1990-94)
1.8L & 2.0L ...................................... F4A22
2.0L Turbo ....................................... F4A23
Expo FWD (1992-94)
1.8L ............................................. F4A22
2.4L ............................................. F4A23
Galant FWD
DOHC (1990-93) ................................... F4A22
SOHC
(1990-93) (1) ................................... F4A22
(1994) .......................................... F4A23
Laser Non-Turbo (1991-94) .......................... F4A22
Mirage
1.6L (1990-92) ................................... F4A21
1.8L (1993-94) ................................... F4A22
Summit FWD ................................. F4A21 & F4A22
Sigma (1990) ....................................... F4A23
Summit Wagon 2WD (1990-94)
1.8L & 2.0L ...................................... F4A22
2.0L Turbo ....................................... F4A23
Talon Non-Turbo (1991-94) .......................... F4A22
