Loses power accelerating up hills

Welcome to 2CarPros.

Is the check engine light staying on when the engine is running? If it is, you need to scan the computer for diagnostic trouble codes. Here is a quick video showing how it is done:

https://youtu.be/YV3TRZwer8k

I realize most people don't own a scanner, but often times, a parts store will lend or rent one to you. Or, they will scan it for free. That needs done. If the light isn't on, then there are several things that can cause this to be an issue. Things such as a partially plugged catalytic converter, low fuel pressure, engine vacuum leaks and so on can create low power conditions. Here are a few links that explain how to check for those things:

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

https://www.2carpros.com/articles/bad-catalytic-converter-symptoms

https://www.2carpros.com/articles/how-to-test-a-catalytic-converter

https://www.2carpros.com/articles/catalytic-converter-replacement

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

Even a partially plugged fuel filter can cause this issue. Here is a link that shows in general how one is replaced:

https://www.2carpros.com/articles/how-to-change-a-fuel-filter

Let me know if this helps or if you have other questions.

Take care,
Joe