the trans in my 05 f-350 4x4 will not stay in gear if i give it a shot of fuel driving it will just rev up and not move but if i stay easy on it it will drive but not fast its not making any noise or sounds but yesterday when i moved it in the driveway my tow haul light was flashing and i ran a scan on it and nothing came up. im stumped i don't want to take it apart without knowing what to look for. any help?
I would try to get someone that has a scan tool not just a code reader and see if they can pull the code. I would say overheating isnt going to cause the issues you have as long as it didnt vent and the fluid is full.