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Power Strokes
6.4 Tech
5R110 TC lockup
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[QUOTE="Mark Kovalsky, post: 1507366, member: 1654"] Those two codes mean the torque converter did not lock when the PCM commanded it to lock. Since there are no electrical codes you can eliminate the wiring as the source of the problem. Since there is also no performance code for the solenoid you can eliminate that, too. That leaves a sticking lockup valve in the pump body, leaking seals on the input shaft, or a bad torque converter. For extra credit, what do each of these have in common? Answer: They each require removing the trans to check. [/QUOTE]
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