#41te

Four-speed “UltraDrive” to finally leave #41TE #automatic #Mopar #Ultradrive

Back in 1989, Chrysler launched its first four-speed automatic—which, unlike any competitors, was a revolution in transmission design. It dropped the old bands and hydraulic controls; instead, while still using hydraulics, the “UltraDrive” was controlled by a computer which activated solenoids.  

It was an unmitigated disaster. The transmission was at least a year of testing and refinement away…