my spedomiter sometimes works and sometimes doesnt work on 1998 Plymouth Neon

check engine lite on and thw coder readout is po743 i looked up what that code meant and found out its the torque converter clutch circuit electrical. how do i fix. ive been told i might have to replace the thrasher cable? but who knows

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1 answer
Have the transmission serviced and the vehicle speed sensor along with the torque converter lockup solenoid checked and replaced as needed.
Not a diy repair.