Tag: Ultradrive

By on April 19, 2022

We finish up our Abandoned History coverage of the long-lived UltraDrive transmission today. The pursuit of simplification, modernization, less weight, and better fuel economy lead to the creation of the electronically controlled four-speed A604 marketed as UltraDrive. The idea floated around at Chrysler in the Seventies and then was greenlit and put into production (before it was ready) by an eager Lee Iacocca. A case of unfortunate timing, the new transmission arrived in 1989 at a time when there was almost no exciting news in Chrysler’s product portfolio. Thus the UltraDrive name was coined by marketing, and the new and advanced transmission was featured heavily in the company’s PR materials in 1989 and 1990.

The UltraDrive’s debut version was prone to numerous types of failures because of fluids and sensors, build quality, parts, really everything. But engineers at Chrysler quickly massaged the A604 into the improved 41TE that was ready for use midway through the 1990 build year. UltraDrive was up and running within acceptable reliability standards per Chrysler. Clearly, it was time to create more UltraDrive variations!

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By on April 7, 2022

The recent Rare Rides Icons post on the 1990 Chrysler Imperial Super-K Gingerbread Cookie Edition generated a few comments not only about the subject in question but its four-speed UltraDrive transmission. It seems more than one of you wants a discussion – no – an essay on the UltraDrive. Wish granted! Here we go.

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By on December 10, 2019

Night Court was ranked No. 21 on the Nielsen ratings and Nike execs were contemplating what eventually became the “Bo Knows” campaign when Chrysler’s Ultradrive automatic entered production in Indiana.

Boasting four speeds and a protective limp-home feature soon to be the butt of jokes, Ultradrive was Chrysler’s go-to FWD tranny for many a year. As you read yesterday, the original four-speed version will end production in 2020. Yet memories linger… perhaps even yours. (Read More…)

By on December 9, 2019

1993 Plymouth Voyager in Colorado wrecking yard , hood ornament - ©2017 Murilee Martin - The Truth About Cars

As the automotive industry fluxes towards utility vehicles and electrics, the death of familiar nameplates has become an all-too-common occurrence. Goodbye, Focus, Fiesta, Taurus, LaCrosse, and Regal. And goodbye, too, to the Ultradrive four-speed automatic transmission, which meets its end in the coming year.

The Pentastar-stamped unit — seemingly older than Kirk Douglas’ dad — meets its maker after a lengthy career managing power in a dizzying array of models. (Read More…)

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