Chrysler Sebring 2000 still sporadically in "LIMP IN" and speedometer is dead,?

I can tell you one thing that can cost big bucks to trouble shoot , even transmission shop electrical trouble shooters can cost 100 bucks an hour and it could take several hours to find.Plus one of the worst type of problems is when it doesnt do it all the time and only acts up once and awhile.

Be careful when you get someone to fix this problem bec even they might think they've found the problem and it simply isn't fixed later.

If you have anybody thats handy or could do it yourself I'd start with checking the transmission relay or comp circuit.Try to get access to a diagram or ask Dodge for a print out of the transmission module and control system.

If you can find out if it's a 60 pin layout I might be able to help you in telling what pins are what on the TCM.

I've dealt with this issue before and it can take hours to trouble shoot and can be very frustrating too but try changing the transmission relay switch it with a non vital relay that has the same exact part number , also dont just check the transmission relay fuse try changing it , plus if you can get a 12 volt positive and negative led test probe test the transmission relay socket connections there should be a constant 12 volt positive feed and a solid ground too with the engine off , key out.

Hope that helps and best of luck.By the way if that has what I think in it , it's a 60 pin transmission control module=TCM setup.That system basically works like this with no key in that ignition the ignition feeds a constant positive 12 volts to the TCM, then once you turn the ignition to run the ignition feeds the TCM another positive 12 volt feed that is what we call a switchable feed.Also the TCM gets power from the transmission relay fuse that is a constant 12 volt feed, also once the TCM has these voltages present it sends 12 volts to the transmission relay that in turn sends 12 volts back to the TCM and to the transmission solenoid pack.The TCM then looks for current coming back from the solenoid pack, from the sensors and if it's not there goes into the limp mode.

Well it is either the speedometer sending unit that is in the transmission or your transmission computer isn't reading the signal. If your mechanic can't figure it out then take it to the dealer and they will have it fixed for you in no time.