Hi all - I'm in need of some insight concerning my 5r110, and I apologize in advance because this is probably going to be long.
A couple months ago, I rebuilt my 5r110 for my F250 6.0 using the ATSG manual, and followed it step by step. Here is the parts that were used:
- Alto Red Eagle clutches
- Suncoast pistons and steels
- TransGo upgraded snap ring
- Billet triple disk torque converter
- Remanufactured pump
- All new OEM solenoids
- New OEM TSS
- New OEM internal and external filters
- Fresh Mercon SP fluid
Everything else was cleaned, inspected, polished and put back in. The assembly went very smoothly.
With that said, I'm having an issue with the torque converter not locking up and/or not hitting overdrive. I only drove the truck in my neighborhood for the first 10 miles or so but once on the freeway, I noticed that the RPM seemed a bit higher than normal (doing 65mph), staying at ~2100rpm while driving on flat. After maintaining 65mph for about 10 minutes, the CEL
came on and the tow/haul light started flashing shortly after. I hooked up my scanner and two codes that are present are P0741 and P0744, both TCC
Here is what I've done in attempt to resolve the issue:
- Took it into Ford and had a PCM
- Dropped the pan, removed the internal wiring harness, inspected the harness, tested harness resistance to TCC
solenoid, tested TCC
solenoid, made sure all solenoids were properly seated, tested TCC
solenoid from the PCM
(to ensure external wiring harness did not have a short or break), and double checked that none of the pins on the connecter were bent
In addition, every gear shifts very smoothly without any issue whatsoever (a little too smooth for my liking) and shift lag from P to R and R to D is nearly zero. I recently purchased and installed an Edge Evolution CTS for its monitoring capabilities and have been keeping a close eye on the trans temperature, which has not exceeded 175 and usually stays around 150-160 driving around town but for some reason it's not able to read my Gear & TCL, which I find weird.
Also, in your guys' opinion, do you feel that it would be alright to tow with the trans being unlocked? I have a camping trip planned, which is coming up in a couple weeks, and I have to tow my Jeep on a trailer. It's a fairly flat haul with exception of the last 30 miles or so, where I have to tow up some pretty steep grade.
Thank you for reading and I hope I supplied enough information to give you a good idea of what's going on. Please let me know your thoughts and opinions!