6.0 Still Stumbles When Cold

[Mudddawg]

Hi All,

 

A few weeks ago I posted a topic about my truck stalling. (6.0 Stumbles when cold). I have checked fuel pressure and it is fine. I have noticed that when driving after an overnight parking it still stumbles like something is binding up. As soon as it shifts into 2nd gear it almost stalls out then the rmps go up and down. It does not rev up freely like a slipping tranny, just stalls then tries to run then immediately bogs again. This continues untill I lift off the accelerator. When I press the accelerator again it drives ok. After this you can left off the gas to come to a stop and the rpms immediatly drops as if something is still binding. After a couple of miles down the road problems goes away. The other thing I have noticed is when the torque convertor is engaged and you come to hill, it will not disengage without lifting off the gas then pressing the gas again. If you give it more gas without lifting it will downshift before the torque convertor disengages. I have been told that it may be the tcc solenoid and maybe a clogged cat. The truck only has 60,000 miles. Also no engine light and no codes. Any ideas?