Loss of power when engine management light comes on

When the Engine Computer detects a problem, it sets a diagnostic fault code and turns the Check Engine light on to tell you. The place to start is by reading that code. Chrysler makes that real easy to do yourself. Cycle the ignition switch three times within five seconds from "off" to "run" without cranking the engine, leave it in "run", then watch the code numbers show up in the odometer display.

There's over a thousand potential fault codes but only those that could adversely affect emissions must turn the Check Engine light on. When the light is off the next time you start the engine, that means it's an intermittent problem and it has the second lowest level of severity. You still do not want to ignore it though because sometimes minor problems can become serious.

You should start a new question. When you piggyback on this one, I'm the only person who will see it and have a chance to respond, and I don't have a good answer for you. That does you a disservice. When you post a new question, all the experts will see it and have a chance to respond with a better answer.