06 6.0 shifting issues
I have an 06 f250. It has around 180,000 miles of 1/3 towing, 1/3 highway, and 1/3 ranch miles. I am running innovative tunes and since I got them, I havent been happy with the shifts. But more recently, it seems to be getting worse. I have multiple issues.
1. When shifting in any gear with any of the tunes, it has a slight hesitation after each shift then has a very hard shift into each gear. It doesn't feel like a shift kit, but just a hesitation, then a hard shift that doesn't feel right.
2. When towing in a tow tune, on flat land and maybe 1/4-1/2 throttle going 0-60, it'll shift 1-2, 2-3, 3-5, 5-3, 3-5. It acts like it doesn't know which gear it wants to be in. But eventually settles in 5th when it's up at 60.
3. When going into reverse, it takes a second or 2 to actually get into gear. In that 1-2 seconds, it seems like it's just clutches slipping.
4. When in the stock tune, it seems to shift fine.
After all these symptoms started getting worse, I took it to the dealer hoping that changing the oil, filter and the main drive solenoid (I think that's the proper name. It's the middle solenoid in the rear bank) would make it shift better. I replaced the solenoid with an after market solenoid that's supposed to let more oil through.
None of that helped. I then talked to innovative and they suggested getting my truck re flashed then getting the tunes re-written. Again no difference. I then tried resetting the computer by leaving the batteries off for a few hours. Still no difference. I'm now wondering if my transmission is ruined, needs rebuilding, or if there is anything else I can do. If you have any advice, please let me know.