05 6.0 cold start and tranny issues

[Fordutility6.0]

I have an 05 6.0 170000 mi have had 25k in engine work since it went out of warranty, it has recently been to ford for hard to start issues, every time they say they can't find anything wrong, it's had new ficm new ipr and new icp still not any better, it will start and idle rough until my h and s tuner reads 140 degrees coolant temp, also the tranny is starting to make almost a torque converter grinding noise when it warms up and I can guarantee when the tranny starts to make the weird noise the engine will idle rough, people I've talked to about the noise says sounds like the torque converter is staying locked causing inconsistent pressure on the engine, also lol the tranny since I've had the truck flares into fourth gear...torque converter? Any suggestions would be greatly appreciated