Originally Posted by
Anvil15jku
I've read a lot, and learned a lot, and believe this is a tuning issue...
I have noticed several times that when I take off from a light, stop sign, etc. that my Jeep seems very underpowered (and it isn't.) So I smacked the shifter into Autostick and found that it was in 2nd gear. Started learning and logging and was finally able to catch it in a log.
When I stop, the log shows the Trans Selected Gear as D, the Trans Current Gear as N. If I stay in D and start to take off it will show N for quite a while and eventually display 'Unknown' then 2nd without having set the Upshift 'Yes' bit. If I slap it into Autostick it is in 2nd and will not allow me to change it, neither up nor down, until I start moving.
I don't believe it is an internal issue because I can downshift to 1st with the Autostick and the shift is firm. Where should I start looking for the root cause?
You can see the first instance in the attached log at Time: 07:46:52, 00:04:36.