I have a 2001 Dodge Ram 1500 two wheel drive automatic. It will not shift into overdrive until I have driven 15 to 20 miles down the hiway. After it does shift it operates properly, until cool down
After it finally shifts into overdrive and the torque converter locks, it works properly for the rest of that trip. Shut the ignition off and engine cool down it has to go through the same process again to shift into overdrive. Sometimes if it has not shifted after 10 miles I can pull over, shut the engine off and restart and take off again it goes right into overdrive. Fluid and Torque converter are new 2 years ago when I installed this tranny into my truck. I have kept it mostly in town because of this problem, have put 4500 miles on it this way and fluid still clean and no burnt smell. Help!
You may have to do a live data scan on the engine control systems, I suspect that a sensor is out of specs, it is showing a reading so the ECM is not reading as a bad sensor so it is not turning on the check engine light.
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