More than likely you have a restriction in the PCV system or idle control system.
However, we should start with checking for vacuum leaks just to be sure we don't have any.
https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge
Below you will find the testing that we need to run through in order to find out where the issue is.
As you will see at the beginning of this testing this issue could cause idle issues and should be checked if all else does not solve the issue.
Please run through this and let us know what you find. Thanks
Images (Click to make bigger)
SPONSORED LINKS
Friday, September 17th, 2021 AT 8:48 PM