I look forward to hearing the outcome of this and the voltage level of the DC source to the programmer / computer sounds like it could be a realistic issue and it will be interesting to see if SCT confirms this , would also like to see them post a number of minimum acceptable voltage level .
On a separate note : JP7 why the T/H mode all the time ? DO you drive on allot of roads with elevation Changes ? T/H mode will impact MPG / KPG do to the engine braking . I have seen allot of comments on shifting and seems the 5.4 owners comment even more . I am lucky to this point I guess , 6.2 built March 2011 and I could not be happier with how it shifts. If I did ever become concerned the first thing I would do is disconnect the battery for 15 plus minutes and reset the system to see if the adaptive shifting is impacting it .
( not trying to hijack thread , I will go start one on this )
No worries about the hijack - I do it all the time
I've no idea when mine was built, but I drove it off the showroom floor in August 2010. It's one of the early 6.2's.
I did disconnect the battery within the first 100 miles and tried to get the tranny to learn my favourite shift range - no dice. So since then, I learned that T/H mode was much more suited to the way I drive, thus use it all the time. I'm 75% city driving, and it works great for my needs. Calgary has lots of hills in town, and the way T/H holds a gear is much more beneficial than the stock setting which bogs down.
And I could give a rats ass about mileage, since I run with company gas cards.
