HemiJeep
Junior Member
I have a custom installation of a 2004 Ram 5.7 Hemi with matching 5 speed auto trans installed in a 2004 Jeep Wrangler. It was done when the vehicle was brand new. I am the new owner. I have an issue where, while cruising down a level road, the transmission will downshift 1 gear and just sit there. It will not go back into 5th gear until I restart the vehicle. It seems right before this happens, power drops for a second, then comes back after the downshift. I recently replaced the PCM, which helped various issues, but this is continuing to happen. There are no error codes that appear on the OBD for engine or transmission. The button to turn off overdrive functions, but that seems to drop you down 2 gears. No other signs of any issues. Wondering if anybody has seen something similar on their RAMs.
