#ultradrive

Time runs out on old four-speed this year #Mopar #torqueflite #transmissions #Ultradrive

The old four-speed won’t make it past the end of the year, according to a reliable Allpar source.  The six-speed, which is made on a different line and with some different casting machines, will live on, reportedly making it past the end of the year at least.

Four-speed automatics are getting quite rare, and the Journey already has a six-speed option. The Journey has long been living on borrowed…

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…