Q: Lacks power on takeoff 1999 Dodge Ram 1500

Hello - the combination of a lack of power from a standing start, and a poor shifting complaint may indicate your transmission is in "limp mode". This would cause it to take off in 2nd or even 3rd gear - which would be pretty weak. A problem with the throttle position sensor can also cause these symptoms. Normally "limp mode" will set the Check Engine condition, but not always. Checking for problem codes, whether Check Engine is illuminated or not. Check for the proper transmission fluid level and condition (more pink than dark, and no burned smell). For assistance with this diagnosis, I recommend a transmission inspection performed by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, and give you an accurate assessment of damage and cost estimate for repairs.