Engine shuts off at low RPMs?

So, this can be a vacuum leak, or the throttle body needs to be serviced. Here are three guides that will help us fix the problem, only test the engine for vacuum leaks when the engine is cold.

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

and

https://www.2carpros.com/articles/stall-at-idle

and

https://www.2carpros.com/articles/throttle-actuator-service

Please go over this guide and report back.

I also wanted to mention the idle air control valve can have carbon in it to cause the idle issue. I would just recommend replacing it. You can try to clean it, but you will end up having the same issue. The valve is located on the intake manifold just behind the throttle body.

As Ken L suggested earlier. Clean the throttle plate of carbon and I would also recommend replacing the idle air control valve.