First off, the motor was just fully rebuilt and the trans has new fluid and filter. Motor has all new injectors along with being rebuilt from the main bearings out.

It feels like its running on 5 of 6 cylinders at idle, but perks right up when you accelerate...though it stumbles ever so slightly when cruising. Ideas?

New fluid and filter in the trans as well as a new torque converter seal. Trans shifts great in 1st, 2nd, and 3rd...but it will NOT go into 4th. I can press the OD button and the dash light will go on or off but it still never effects it going into OD. Ideas?