Clutch-Pack Design Archives - Transmission Digest
Hyundai 5-Speed Transmission Variations (No longer a Mitsubishi clone)

For a lot of years Hyundai, in order to avoid development cost, utilized Mitsubishi for their automatic-transmission needs. All that changed in the early ’90s when Hyundai decided to get into the research and development end of the business by releasing their version of the old Mitsubishi KM series of automatic transmissions. The Hyundai A4A/A4B series of transmissions was launched in 1993, which did have some noticeable differences from Mitsubishi, especially in 2000 when the F3 model was released utilizing six solenoids. Even the case configuration was different from Mitsubishi.

Honda & Acura – the New Generation

This has now become a very frequent question on the tech line: “Hey, what are all these solenoids, and what in the world do they do?” The questions started in the 1997 model year, when the Honda Prelude came out with the M6HA transaxle. This was one of the first vehicles to receive this new-generation 4-speed. This article, I hope, will clear up some of the questions on shift strategy, clutch-pack applications and solenoid application. After all, how can you fix something if you don’t know how it works?