Sits and idle all day even when pushing gas pedal to the floor?

It sounds like the car is in limp mode, we should run the codes to see what comes up, also please check the throttle cable to make sure it is connected to the throttle body.

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

This guide may help as well:

https://www.2carpros.com/articles/reduced-power-limp-mode

If everything checks out the fuel pressure needs to be checked.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

You can rent a gauge form the auto parts store for cheap.

Item .................... Specifications

Key on, engine off .................... 448 kPa (65 psi)
Engine running .................... 448 kPa (65 psi)

Check out the images (below). Please let us know what happens.

Please let us know what you find. We are interested to see what it is.