The Chrysler TF-604 transmission is a one of a kind design. Yes it is hydraulic like all automatic transmissions and it has a torque converter with lock up too. but theoretically speaking, it has a few unique features in terms of the way it operates.
I need to say that this transmission was a real trouble maker for the first 3 or so years of production. I think 1989 was the first year. The factory worked out many of the problems and, of course, with a TransGo upgrade kit all of the problems are solved. Which in turn makes an excellent working and very reliable transmission. Don’t forget to use Genuine Chrysler Synthetic ATF, no substitutes…
What it is missing mechanically is any type of sprag clutch elements or bands. It compensates for this by working off of the computer and the input signals from various switches and sensors to make shifting decisions. It is based around what we call shift timing. It is a complicated and sophisticated way of operation. But, an excellent transmission, once it is upgraded.
Don’t take maintenance lightly either. All Mopar overdrive transmissions, both front wheel drive and rear wheel drive are very sensitive to having the ATF changed regularly with the proper ATF.
Chrysler also makes a very similar front wheel drive unit called the TF-606, which works off the same principles.
I wanted to introduce the function of this transmission today to you and let you know that Got Transmissions.com only sells the upgraded rebuilt TF-604 and TF-606 transmissions. You never have to worry about the integrity of a transmission purchased from them.
I want to provide more “vibe” on this unit in the next GotTransmission Blog post. stay tuned, we hope you come back tomorrow for more theory and function on this unique transmission.
