Why when I accelerate at slow speeds it feels like built up air and the car will jolt and jump RPMs?

Hi,

It could be a few things. For example, it could be a fuel pressure-related issue, a large vacuum leak, or even a partially plugged catalytic converter.

When this happens, do you ever notice any odd smells or sounds? Does the engine overheat?

Also, have you checked to make sure the fuel pressure is within the manufacturer's specifications?

Let me know.

Joe

This can be a fuel delivery problem which means a weak fuel pump or a MAF sensor that has gone bad but is not showing any codes which is possible. First, I would check the fuel pressure,

Here is a guide to help with instructions below to show you how on your car:

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

FUEL SYSTEM PRESSURE

400 kpa ±34 kpa (58 psi ± 5 psi)

Fortunately, the fuel pump can be accessed under the rear seat. I have also seen the TIPM start to go out and cause pretty strange problems as well, but we can tackle that as needed. You can rent a fuel pressure gauge at the auto parts store for cheap or free. Check out the images (below). Please upload pictures or videos of the problem so we can see what's going on.

This can be a clogged catalytic converter, which lowers the vacuum reading and makes the computer think you are going up a hill and dumps more fuel into the system, which makes the situation worse.

Here is a guide to help us confirm the problem:

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

Please go over this guide and get back to us.

Hi,

We would be happy to help with the new question, but we can only address one topic per post. We do this so it is more helpful to others. I hope you understand.

Here is the link to start a new post. Simply copy and paste your new question and one of us will be happy to help.

https://www.2carpros.com/questions/new

Again, I hope you understand.

Take care,

joe