Usually this happens when the idle speed control motor gets weak and cannot perform as it should by it could be a vacuum leak as well, also we should run the codes.
Here is a guide to help, use it only when the engine is cold:
https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge
and
https://www.2carpros.com/articles/engine-idles-too-high
Here is how to run the codes and I have included how to change out the Idle speed control motor as well in case a code comes up for it. Check out the images (below). Let us know what happens and please upload pictures or videos of the problem so we can see what's going on.
Images (Click to make bigger)
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Tuesday, June 13th, 2023 AT 6:49 PM