My truck is very sluggish....it seems that it is starting out in o/d and it takes for every to get up to speed. I don't think
it is shifting gears.
Do you have any dashboard indicators lit? Such as CEL or TCS? Especially a transmission light? If so, you MAY be in "limp mode" if a fault is detected in the transmission anywhere, the truck will reduce power to prevent further damage but get you off the road to a safe place. It is possible that it will go in to 'limp" without any indicators lighting up however.
Here is a good page to read: http://easyautodiagnostics.com/chrysler_map_2.0L_2.4L/map_sensor_troubleshooting_1.php~~ If you get a scan of P0700 that is transmission fault. Or it could be the MAP, or Manifold Absolute Pressure fault. That is P0107 or P0108
Search Dodge Ram 1500 Questions
Dodge Ram 1500 Experts