'04 V8 5R55S Transmission Code P1744 Update

rgorke

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I wanted to give an update on my transmission. I posted about it in the threads linked below. I am at nearly 1000 miles and still shifting great! NO codes! LS now has nearly 268k miles!!!

History:

Early 2019 Replaced solenoid -
Late Summer 2019 Full rebuild
Fall 2020 Another solenoid replacement
Winter/Spring 2022: P1744 code - Replaced solenoid (this is #3), replaced valvebody, and full fluid exchange to remove Mercon LV with Mercon V.

Lessons: ALWAYS use Motorcraft parts. I used remaned or other non-OEM solenoids and they failed twice. Always ensure that the "professionals" working on your vehicle use the correct fluids.



 

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