Engine idles fine but stumbles on ACC

More than likely this is a fuel issue but we need to run through a couple things first to prove this out or find the other possible causes.

We need to start with fuel pressure when you are trying to accelerate. Here is a guide that will help with this:

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

If the fuel is ok, then we need to rule out a vacuum leak, and possible air flow sensor (MAF). So here is a guide that will help with a vacuum leak:

https://youtu.be/4ktw1X4W_-k

Below you will find the info on the MAF sensor. I would suggest unplugging it and driving the vehicle. If it seems to do better then I would clean or replace it.

Here is a guide that will show how to replace it:

https://www.2carpros.com/articles/mass-air-flow-service

Let us know what you find with this and we can go from there.

Thanks