Chrysler Repair: Chrysler Transmission, concorde lxi, chrysler transmissions

Question
I have 1996 Concorde LXi with transmission stuck in "limp mode" until you shut off engine and restart. Then it is fine until the next cool down. As long as the engine is warm you can restart to get the tranny to work normal. What could this possibly be? No other problems. Transmission is clean red fluid and changed every 30,000. No problems until I replaced a dead coil pack. 3.8L 6 cyl.  

Answer
Hi Gene,
I don't think the coil pack change out is related to the start of the trans problem, probably just coincidental. It sounds like you have taken good care of the trans so hopefully it is minor. But it is a good idea to use the Chrysler branded fluid for refills if you haven't done that so far. These units seem to be finicky about their "diet".
The transmission has an electronic controller that has the ability to recognize malfunctions and store them in its memory as two-digit (or four-digit, post '96) fault codes. An electronic readout device is plugged into a port under the dash to access the memory and tell you the fault code numbers. It would be worth spending about $50 to have this done just in case the problem had to do with the hydraulic or electronic parts rather than the internal mechanical parts because those could be repaired without taking the trans out of the car and dismantling it. So a dealer or a competent independent transmission shop (but not a franchise type where the usual answer will be to do a "rebuild") with a reader for Chrysler transmissions should be able to do that. Ask for the code number(s), what they mean, what repair is needed and how much it will cost. Be sure that they have the reader plug adapter that will give them access to the memory via the plug under the dash. This is not the same plug as is in the engine compartment(pre-96) for accessing the engine controller memory.
Then write back and we'll evaluate what you were told. You don't have to authorize a repair until you decide you understand the situation and maybe get another repair estimate. You might even ask if in the case you decide to authorize the shop to do the repair will the cost of the readout be credited against the cost of the repair?
So take your time with this so you don't do unnecessary repairs. The cost of a rebuild is high so getting a second bid is worthwhile and also comparing warranty provisions is wise if that is what is required.
Roland