Chrysler Repair Questions? Ask a Mechanic for Answers ASAP
Hello my name is ***** ***** I will be assisting you today. Sounds to me like a possible plugged up catalytic converter. It could be a fuel pressure problem, but that should set a "running too lean" code. Try removing the upstream O2 sensor and see if the power improves. If so, replace the cat. If it does not improve, then get the fuel pressure tested. It should maintain about 50 PSI at all times.
Hopefully this information will help.