Join Date: Mar 2013
Location: Gillette, Wy
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4r100 trans won't shift into overdrive
I have a 2002 7.3L Ford F-350 Super Duty I changed the transmission filter on my tranny, I had no problems before this and now it won't shift into overdrive. A DTC code keeps coming up P0743 TTC circuit indicated the solenoid as ON low voltage when requested OFF high voltage, & P0741 Torque converter slip is greater then expected. I've checked the main wiring harness and the connection going to the solenoid pack no broken wires or a loose connection I'm thinking that I should replace the solenoid pack but I want to make sure that will fix the problem before I spend 300 dollars. Does anybody else have any advice or ideas.
Last edited by Ford_man; 03-31-2013 at 06:12 PM.