5r55e problems
Sounds like the torque converter is locked up. Is the something in the transmission that would cause this, like the tcc solenoid. Can the ECM being bad cause this problem,.
Im from old school, all this electronics is well above my pay grade.
These transmissions had issues when new.
Check the electrical connections on the exterior of the transmission. Easy to do, might be an easy fix. Emphasis on "might".
I think you need to find a good trans shop or Ford dealer who can read codes, otherwise it's a lot of guess work.
Also consider using, borrowing, or coming by the inexpensive ELM scan tool & run FORScan diagnostic freeware on the viewing device of choice as discussed here Low Cost ELM Scantool - Ford Truck Enthusiasts Forums (ford-trucks.com) & have it scan for trouble codes, as this combo can access & query All vehicle computer / controllers for trouble code clues, then post All code Numbers, as they can help focus a trouble shoot, in case you have more than one problem.
More trouble shooting thoughts for consideration let us know what you find.









