RHewett
Junior Member
I have a 2007 Ram 2500 5.9l Cummins. When the engine is cold, the transmission shifts great. When the temp gets around 180-190, the transmission starts shifting from OD to Drive back to OD. Once I get to to around 60 mph, it usually will stay in OD but if I accelerate, it doesn’t want to stay there. About 2 years ago I had 1700 dollars worth of work done to it. Will a fluid/filter change help or could it be an electrical issue? My voltometer stays around 14 volts. I had a check engine light a few days ago but it has since went off. The last time it came on, I had it scanned and was told it was the OD sensor. I’m stumped as I’m clueless on transmissions