Dodge and Chrysler TF604 Tranmsissions, are they the same?

I drove the Caravan, actually it is a Town and Country Van, to my buddy’s repair shop and borrowed his Snap On scanner. BTW: one of the vans is made by Dodge and the other one is a Chrysler, respectively, although mechanically they are identical. Anyway it has a 3.8L engine and the Chrysler TF 604 transmission.

It takes a few minutes to input the vehicle identification number into the scanner and get it setup for the exact model vehicle being tested. In this case I have to do a road test. The reason is that the scanner tool will literally pick more usable information about everything internal and all electrical functions during a short 5 minute road test.

For guys like me, this is a very cool and fun thing to do, what can be better than a scanner friendly car? And the Dodge and Chrysler transmissions are just that, the most scan tool friendly car in the world.

After my road test, I was able to examine the information the scanner collected. I want to make a point here, I do not monitor the scan tool while I drive. I go through the standard process necessary for the scan tool to gather the information. The scan tools I use gather info and save it while I drive.

The information showed no electrical issues to be concerned with, but it did show a very high CVI number for the 1-2 clutch pack. What is a CVI number, CVI is an acronym for clutch volume index. CVI is a measurement of how much transmission fluid enters a clutch pack to make it operate, if the number is to big or to small, or out of range (OR), it means the clutch pack is damaged.

A high or low CVI number on any clutch pack means that the transmission has an internal problem. My neighbor has approved a removal and dis-assembly, which is called an RDI. RDI is an acronym for remove, dismantle, inspect.

Once the transmission is removed, I will tear it down, clean it up like I was preparing for brain surgery and inspect the components for damage. I am going to document the whole process with pictures and present them to you as I go.

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