When I step on the gas pedal there is no power at all?

This happens when one of the catalytic converters gets clogged, the engine has skipped time, or the MAP sensor or fuel pump is bad. Let's run the codes for clues of what the problem can be, so we can go from there. Here are two guides, please go over them and get back to me.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

and

https://www.2carpros.com/articles/engine-has-low-power-output

You might what to use a rubber mallet and tap the exhaust system to see if you can hear anything rattling inside just behind the cats. Check out the images (below).